问题

Listen! Someone is knocking at the door. Who _____it be?—It_____be Tom. He phoned to visit me this evening.
A:may;may
B:may;shouldn’t
C:must;can
D:must;may
B:may;shouldn’t
C:must;can
D:must;may
正确答案是:
同类题型
It is helpful to a good habit of reading in language learning.
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When we hurried to the theatre, the concert ______ for five minutes.
I want to buy a nice present _____ my mother and I must give it _____ her myself.[ ]