The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.
A. shan’t B. can’t C. needn’t D. mustn’t
—Why hasn’t the speaker turned up?
—He _________ the flight. I’ll find it out at once.
A. must have missed B. might have missed
C. would have missed D. could have missed
—Look, John’s fallen asleep.
— Oh, he _______ too late last night.
A. might sit up B. should have sat up C. could sit up D. must have sat up
—Mum, I climbed to get the Teddy Bear from the top of the shelf.
—My goodness! You _______ yourself. You ______ do that next time.
A. must have hurt; mustn’t B. should have hurt; can’t
C. may have hurt; mustn’t D. might have hurt; won’t be able to
—I went to work on foot yesterday, though it _________ cats and dogs.
—You __________ by bus. It was likely to get a cold.
A. is raining; must have gone B. rained; would go
C. was mining; should have gone D. have rained; could have gone
Haven’t I told you that you __________ have the answer tomorrow morning?
A. will B. shall C. should D. would
