If there is a fire you _______________ act quickly! ...

[ Grammar ]

If there is a fire you _______________ act quickly!

A. Can
B. Must
C. Don’t have to
D. May

Select your answer:

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If the microphone _____(not to work), you _____(not to hear).

A. does not work/ does not hear

B. do not work/ does not hear

C. do not work/ do not hear

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