题目

---______ Mary happy today?   ---I don’t think so. She ______ look happy this morning.            A. Is, isn’t       B. Is, doesn’t           C. Does, doesn’t   D. Does, isn’t 答案：B10、-Look! That man looks like my Chinese teacher. -It ______ be him. For he ______ Shanghai. A. can’t, has gone to                              B. may not, has been to C. mustn’t, has gone to                              D. can’t, has been to