Waterfalls _____ down the cliff. 

We need to _____ these furnitures upstairs. 

Some people seek _____, while others seek wisdom. 

We can _____ the poor with some food by donating to charity. 

It's hard for children to stay _____.

To conserve energy, we can convert _____ energy into electricity. 

Some animals can dig a burrow and live _____.

My toy doesn't work, because I need to change the ____.

The copy _____ is broken again. We need to call someone to fix it. 

It is _____ to always try your best, no matter how difficult it is. 

I always stay up late to _____.

A _____ taught me how to hold my breath underwater.

I found my phone _____ the table. 

The teacher waited for the students to ______ down. 

The students are thrilled that it is finally the ____ week of school.

When we're done with work, I will go back to my _____.

The children like to play _____, where it's more spacious.

One hundred minues ten is _____.

When there's a typhoon, try to stay _____ your house.

They often use a low ____ light bulb as a heat source.

The thought brought _____ bumps to her arms.

We had to ____ up our drain t collect water. 

We heard the dogs ______ last night.