Past modals: Should have, must have, might have, could have Flashcards | StudBud

Home Library Explore SAT

Home Library Explore SAT

Past modals: Should have, must have, might have, could have Flashcards | StudBud

Past modals: Should have, must have, might have, could have

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Question

I suppose the explanation is that you were very busy. You ____ have been very busy.

Answer

must

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