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Grammar
Choose the correct quantifier to complete each sentence.
Penguins must survive ____________________ cold weather.
Grammar
Choose the correct quantifier to complete each sentence.
This is ____________________ meat for a lion. They eat much more.
Grammar
Choose the correct quantifier to complete each sentence.
The zoo needs to buy ____________________ kinds of vegetables for all the different animals.
Grammar
Choose the correct quantifier to complete each sentence.
The monkey is still hungry because he ate ____________________ food.
Grammar
Choose the correct quantifier to complete each sentence.
Grizzly bears need to eat ____________________ fish in order to survive through the winter.
Grammar
Choose the best word or phrase to complete each sentence. Choose Ø if no word or phrase is necessary.
Tami was texting her friends ____ Roberta was driving the car.
Grammar
Choose the best word or phrase to complete each sentence. Choose Ø if no word or phrase is necessary.
I jumped out of my chair ____ I heard him at the door.
Grammar
Choose the best word or phrase to complete each sentence. Choose Ø if no word or phrase is necessary.
While Trisha was playing her violin solo, ____ one of her strings broke.
Grammar
Organize the sentences in the correct order to make real conditionals.
Grammar
Organize the sentences in the correct order to make real conditionals.
Grammar
Organize the sentences in the correct order to make real conditionals.
Grammar
Organize the sentences in the correct order to make real conditionals.
Grammar
Organize the sentences in the correct order to make real conditionals.
Grammar
Write the correct past continuous form of the verb in parentheses.
The students (take )_______________ a test when the fire alarm when off.
Grammar
Write the correct past continuous form of the verb in parentheses.
Mexico (win) _______________________ at half-time.
Grammar
Write the correct past continuous form of the verb in parentheses.
Linda’s mother (travel) ___________________ on a business trip last week so she hasn’t seen Linda.
Grammar
Write the correct past continuous form of the verb in parentheses.
Diego (sit)____________________with his friends in the park this morning.
Grammar
Fill in each blank with the passive form of the verb in parentheses. Use the simple present tense.
Most of the time, dresses ____________________ (wear) by women.
Grammar
Fill in each blank with the passive form of the verb in parentheses. Use the simple present tense.
In my house, fruit ____________________ (eat) for dessert.
Grammar
Choose the correct answer if it is simple past or present perfect form of the verb in parentheses.
My husband and I ____________________ (get) married in 2003.
Grammar
Choose the correct answer if it is simple past or present perfect form of the verb in parentheses.
Harry ____________________ (move) three times in his life, and he’s planning to move again next year.
Grammar
Choose the correct answer if it is simple past or present perfect form of the verb in parentheses.
Mrs. Angelo ____________________ (live) in Bolivia from 1998 to 2007.
Grammar
Choose the correct answer if it is simple past or present perfect form of the verb in parentheses.
Pamela ____________________ (learn) to speak Thai when she was in Thailand.
Grammar
Choose the correct answer if it is simple past or present perfect form of the verb in parentheses.
Lawrence ____________________ (work) at his present job for six years.
Vocabulary
Read each sentence. Then answer True or False.
Wildlife includes both plants and animals.
Vocabulary
Read each sentence. Then answer True or False.
If a species goes extinct, we may be able to see it in a national park.
Vocabulary
Read each sentence. Then answer True or False.
A zoo is a natural habitat for monkeys.
Vocabulary
Read each sentence. Then answer True or False.
People can ride on tame horses.
Vocabulary
Read each sentence. Then answer True or False.
If people hunt all the tigers, there will be more tigers for future generations.
Vocabulary
Match the vocabulary words to the definitions below.
Everyday English
Match the words and phrases to the conversations below.
Reading
Read the article.Then choose the correct answer.
Green Farming with Predatory Insects
Every year, insect pests destroy or reduce farm crops and cost farmers huge sums of money. But chemical pesticides also carry a high price—not only in terms of the money these chemicals cost, but also the toll they take on the health of farmers and consumers and on the environment as a whole. In the U.S. alone, farmers spend over $30 billion annually on
pesticides. Worldwide, thousands of cases of pesticide poisoning occur eachyear, and that’s not counting the long-term health effects.
One way that farmers can avoid the high price of chemical pesticides is through the use of predatory insects. These insects eat the pest insects which destroy farmers’ crops. Unfortunately, using chemical pesticides can kill all the insects in farmers’ fields—not just the pests. In this case, predatory insects can be purchased and re-introduced in the
environment. The effect is not as fast as with chemicals, but once the insect populations have become established they are a very sustainable way to control—if not eliminate—the pest species.
On the Davidovich farm, the effect of introducing predatory species has been dramatic. “Our biggest crop is broccoli,” says farmer Ron Davidovich, “and our biggest problem is the broccoli aphid.” The aphids are a favorite food of the syrphid fly, but bringing in boxes of flies wasn’t enough to solve the problem. “The flies needed places to live, so we’ve made the farm more complex.” Rows of vegetables are alternated
with flowers, and green shrubs have been planted near the edges of the fields. According to Davidovich, “If your farm has more diversity—a number of different plant and insect species—you’re not going to have the problem of one species, like the broccoli aphid, having all the advantages. We still find a few, but the syrphid flies keep the aphids’ numbers under control.”
And the cost advantage? Davidovich used to spend around $12,000 every year on chemical pesticides. Twenty-five colonies of syrphid flies cost only $400, and the expense of planting the shrubs and other landscape plants came to $6,500. So for less than $7,000, the farm is now much
more sustainable. “We haven’t had to buy any chemical pesticides this year, and if the weather is good for both broccoli and flies, we don’t plan to spend any next year, either,” says Davidovich.
Question #1: Each year, farmers in the U.S. spend ____ on chemical pesticides.
Reading
Read the article.Then choose the correct answer.
Green Farming with Predatory Insects
Every year, insect pests destroy or reduce farm crops and cost farmers huge sums of money. But chemical pesticides also carry a high price—not only in terms of the money these chemicals cost, but also the toll they take on the health of farmers and consumers and on the environment as a whole. In the U.S. alone, farmers spend over $30 billion annually on
pesticides. Worldwide, thousands of cases of pesticide poisoning occur eachyear, and that’s not counting the long-term health effects.
One way that farmers can avoid the high price of chemical pesticides is through the use of predatory insects. These insects eat the pest insects which destroy farmers’ crops. Unfortunately, using chemical pesticides can kill all the insects in farmers’ fields—not just the pests. In this case, predatory insects can be purchased and re-introduced in the
environment. The effect is not as fast as with chemicals, but once the insect populations have become established they are a very sustainable way to control—if not eliminate—the pest species.
On the Davidovich farm, the effect of introducing predatory species has been dramatic. “Our biggest crop is broccoli,” says farmer Ron Davidovich, “and our biggest problem is the broccoli aphid.” The aphids are a favorite food of the syrphid fly, but bringing in boxes of flies wasn’t enough to solve the problem. “The flies needed places to live, so we’ve made the farm more complex.” Rows of vegetables are alternated
with flowers, and green shrubs have been planted near the edges of the fields. According to Davidovich, “If your farm has more diversity—a number of different plant and insect species—you’re not going to have the problem of one species, like the broccoli aphid, having all the advantages. We still find a few, but the syrphid flies keep the aphids’ numbers under control.”
And the cost advantage? Davidovich used to spend around $12,000 every year on chemical pesticides. Twenty-five colonies of syrphid flies cost only $400, and the expense of planting the shrubs and other landscape plants came to $6,500. So for less than $7,000, the farm is now much
more sustainable. “We haven’t had to buy any chemical pesticides this year, and if the weather is good for both broccoli and flies, we don’t plan to spend any next year, either,” says Davidovich.
Question #2: Predatory insects control insect pests ____ chemical pesticides.
Reading
Read the article.Then choose the correct answer.
Green Farming with Predatory Insects
Every year, insect pests destroy or reduce farm crops and cost farmers huge sums of money. But chemical pesticides also carry a high price—not only in terms of the money these chemicals cost, but also the toll they take on the health of farmers and consumers and on the environment as a whole. In the U.S. alone, farmers spend over $30 billion annually on
pesticides. Worldwide, thousands of cases of pesticide poisoning occur eachyear, and that’s not counting the long-term health effects.
One way that farmers can avoid the high price of chemical pesticides is through the use of predatory insects. These insects eat the pest insects which destroy farmers’ crops. Unfortunately, using chemical pesticides can kill all the insects in farmers’ fields—not just the pests. In this case, predatory insects can be purchased and re-introduced in the
environment. The effect is not as fast as with chemicals, but once the insect populations have become established they are a very sustainable way to control—if not eliminate—the pest species.
On the Davidovich farm, the effect of introducing predatory species has been dramatic. “Our biggest crop is broccoli,” says farmer Ron Davidovich, “and our biggest problem is the broccoli aphid.” The aphids are a favorite food of the syrphid fly, but bringing in boxes of flies wasn’t enough to solve the problem. “The flies needed places to live, so we’ve made the farm more complex.” Rows of vegetables are alternated
with flowers, and green shrubs have been planted near the edges of the fields. According to Davidovich, “If your farm has more diversity—a number of different plant and insect species—you’re not going to have the problem of one species, like the broccoli aphid, having all the advantages. We still find a few, but the syrphid flies keep the aphids’ numbers under control.”
And the cost advantage? Davidovich used to spend around $12,000 every year on chemical pesticides. Twenty-five colonies of syrphid flies cost only $400, and the expense of planting the shrubs and other landscape plants came to $6,500. So for less than $7,000, the farm is now much
more sustainable. “We haven’t had to buy any chemical pesticides this year, and if the weather is good for both broccoli and flies, we don’t plan to spend any next year, either,” says Davidovich.
Question #3:Nowadays at the Davidovich farm, you will find ____.
Reading
Read the article.Then choose the correct answer.
Green Farming with Predatory Insects
Every year, insect pests destroy or reduce farm crops and cost farmers huge sums of money. But chemical pesticides also carry a high price—not only in terms of the money these chemicals cost, but also the toll they take on the health of farmers and consumers and on the environment as a whole. In the U.S. alone, farmers spend over $30 billion annually on
pesticides. Worldwide, thousands of cases of pesticide poisoning occur eachyear, and that’s not counting the long-term health effects.
One way that farmers can avoid the high price of chemical pesticides is through the use of predatory insects. These insects eat the pest insects which destroy farmers’ crops. Unfortunately, using chemical pesticides can kill all the insects in farmers’ fields—not just the pests. In this case, predatory insects can be purchased and re-introduced in the
environment. The effect is not as fast as with chemicals, but once the insect populations have become established they are a very sustainable way to control—if not eliminate—the pest species.
On the Davidovich farm, the effect of introducing predatory species has been dramatic. “Our biggest crop is broccoli,” says farmer Ron Davidovich, “and our biggest problem is the broccoli aphid.” The aphids are a favorite food of the syrphid fly, but bringing in boxes of flies wasn’t enough to solve the problem. “The flies needed places to live, so we’ve made the farm more complex.” Rows of vegetables are alternated
with flowers, and green shrubs have been planted near the edges of the fields. According to Davidovich, “If your farm has more diversity—a number of different plant and insect species—you’re not going to have the problem of one species, like the broccoli aphid, having all the advantages. We still find a few, but the syrphid flies keep the aphids’ numbers under control.”
And the cost advantage? Davidovich used to spend around $12,000 every year on chemical pesticides. Twenty-five colonies of syrphid flies cost only $400, and the expense of planting the shrubs and other landscape plants came to $6,500. So for less than $7,000, the farm is now much
more sustainable. “We haven’t had to buy any chemical pesticides this year, and if the weather is good for both broccoli and flies, we don’t plan to spend any next year, either,” says Davidovich.
Question #4:According to Davidovich, if a farm is a habitat for many plant and animal species, ____.
Reading
Read the article.Then choose the correct answer.
Green Farming with Predatory Insects
Every year, insect pests destroy or reduce farm crops and cost farmers huge sums of money. But chemical pesticides also carry a high price—not only in terms of the money these chemicals cost, but also the toll they take on the health of farmers and consumers and on the environment as a whole. In the U.S. alone, farmers spend over $30 billion annually on
pesticides. Worldwide, thousands of cases of pesticide poisoning occur eachyear, and that’s not counting the long-term health effects.
One way that farmers can avoid the high price of chemical pesticides is through the use of predatory insects. These insects eat the pest insects which destroy farmers’ crops. Unfortunately, using chemical pesticides can kill all the insects in farmers’ fields—not just the pests. In this case, predatory insects can be purchased and re-introduced in the
environment. The effect is not as fast as with chemicals, but once the insect populations have become established they are a very sustainable way to control—if not eliminate—the pest species.
On the Davidovich farm, the effect of introducing predatory species has been dramatic. “Our biggest crop is broccoli,” says farmer Ron Davidovich, “and our biggest problem is the broccoli aphid.” The aphids are a favorite food of the syrphid fly, but bringing in boxes of flies wasn’t enough to solve the problem. “The flies needed places to live, so we’ve made the farm more complex.” Rows of vegetables are alternated
with flowers, and green shrubs have been planted near the edges of the fields. According to Davidovich, “If your farm has more diversity—a number of different plant and insect species—you’re not going to have the problem of one species, like the broccoli aphid, having all the advantages. We still find a few, but the syrphid flies keep the aphids’ numbers under control.”
And the cost advantage? Davidovich used to spend around $12,000 every year on chemical pesticides. Twenty-five colonies of syrphid flies cost only $400, and the expense of planting the shrubs and other landscape plants came to $6,500. So for less than $7,000, the farm is now much
more sustainable. “We haven’t had to buy any chemical pesticides this year, and if the weather is good for both broccoli and flies, we don’t plan to spend any next year, either,” says Davidovich.
Question #5:This year, the Davidovich farm has spent ____ on chemical pesticides.
Listening
Listen to the conversation. Then choose the correct answer.
The man’s dog eats ____.
Listening
Listen to the conversation. Then choose the correct answer.
The man’s cat eats ____.
Listening
Listen to the conversation. Then choose the correct answer.
The man’s dog sleeps ____.
Listening
Listen to the conversation. Then choose the correct answer.
The man’s cat sleeps ____.
Listening
Listen to the conversation. Then choose the correct answer.
The man’s dog turns around in circles when he ____.
