--Listen! Kathy is playing the piano in the next room．
--It _________ be Kathy．She has gone to Hangzhou to visit the Cross-sea Bridge．
A. can't B. mustn't C. needn't D. shan't
--I didn't pass the English test．I think I have spent much time playing computer games recently．
--I agree．You ________ play like that any more．
A. needn't B. mustn't C. may not D. wouldn't
--Cathy’s parents have bought her a new house with a swimming pool．
--Really? It __________be very expensive．
A. can’t B. mustn’t C. must D. can
—Is Jessica giving us a speech this evening?
—No, it _________ be her．She _________ to Japan．
A. mustn’t；has gone B. mustn’t; has been
C. can’t; has gone D. can’t; has been
—Our class won the English speaking contest.
—Congratulations! You be very proud of it.
A. can B. need C. would D. must
—Must I go to the shop with you，Mum?
—Err... I can make it myself，Mike. You go with me.
A. mustn’t B. shouldn’t C. wouldn’t D. needn’t
