问题

Look at that girl. Is it Susan–No, it _______ be her. She has gone backto her home town .
A:can't
B:mustn't
C:needn't
D:may not
B:mustn't
C:needn't
D:may not
正确答案是:
同类题型
Do you know when she _________?—Sorry, I don’tBut I’ll let you know when she _________
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I want to borrow the book, but I don’t know how long I can _______ it.—For two weeks.