Grammar Quiz
[ Modal Verbs ]

You ___ forget your keys; it’s essential to lock the door.

A. can

B. mustn’t

C. don’t have to

D. should

Select your answer:
A  B  C  D  E 


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A. along

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What is the purpose of helping verbs?

A. To show you show the sentence is about.

B. To show an action.

C. To link the main verb to the subject.

D. Nothing.

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