Tom didn't do his homework, so the teacher became very ...

★ Modal Perfect

Tom didn’t do his homework, so the teacher became very angry. He _____ his homework

A. must have done

B. might have

C. should have done

D. will have done

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John still hasn’t come out. He ______ everything for the trip now.

A. must have been preparing

B. will be preparing

C. must be preparing

D. will have prepared