--Is Professer Smith giving the speech today?--It ________ be him. He is abroad

题干

--Is Professer Smith giving the speech today?
--It ________ be him. He is abroad right now.

A．mustn't	B．needn't
C．won't	D．can't

上一题下一题 0.85难度单项选择更新时间:2013-08-16 03:47:40

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