In the sentence, 'The students are finishing their projects before the deadline,' which word is the helping verb?

Identify the main verb in the following sentence: "The brave firefighters have extinguished the dangerous blaze."

Choose the sentence where the word "has" functions as a helping verb rather than a main verb.

In the following sentence, identify the helping verb and main verb pair: "The spacecraft will land on the moon tomorrow morning."

Identify the helping verb in the sentence: "Scientists can observe distant galaxies using powerful telescopes."

Identify the complete verb phrase in the sentence: "I should have studied more for my final exams."

In the sentence, "The choir was singing a beautiful melody during the assembly," which word serves as the main verb?

Identify the helping verb in the sentence: "Our team might win the championship trophy this year."

Identify the helping verb in the following sentence: "The detective did search the entire building for clues."

Choose the sentence where the word "is" acts as a helping verb rather than the main verb.