问题 选择题

Mary seems _______ the bad news, for she looks nice and happy.  

A.not to have learned

B.not to be hearing

C.not having learned

D.not to be

答案

答案:A

题目分析:考查不定式用法。不定式的完成式表示该动作发生在谓语动作之前,否定式是在不定式符号前面直接加not.句意:Mary似乎还不知道那个坏消息,因为她看上去很开心。故A正确。

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