-----Who ______ it be that hasn’t handed it in yesterday?------It _______ be Bob

题干

-----Who ______ it be that hasn’t handed it in yesterday?
------It _______ be Bob. He handed it in yesterday.

A．can; mustn’t

B．must; can

C．can; can’t

D．may; mustn’t

上一题下一题 0.4难度单项选择更新时间:2012-06-21 05:20:15

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