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Mr. Smith is always on time for everything. How ________ it be that he was late for the flight?
A.canB.mustC.mayD.need
A

试题分析:考查情态动词辨析。本题是强调句型的一个变式:It 情态动词 be…that/who…其它成分;本句是其特殊疑问句的形式。是对具体的发生进行的强调。句意:斯密斯先生总是很准时,怎么可能会乘坐飞机迟到呢?can可能;must一定,必须;may也许;need需要;根据句意说明A正确。
点评:情态动词就是表示说话者对事情的一种看法,也就是一种语气。情态动词的用法一直是命题者常设置的考点和重点,平时要加强记忆。值的注意的是,中学阶段的情态动词常考额有13个,can-could may-might should-ought to had better will-would   need  have to .考生应注意对这13个情态动词的用法多总结,多运用。
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