A.should study
B. should have studied
C.must have studied
D. must have to study
【答案】C
【解析】考查虚拟语气。句意:约翰的考试分数全班最高,他昨天晚上一定学习了。表示对过去动作行为的肯定猜测要用 must have done这一句型结构。
26. Nobody but Jane ________ the secret.
A. knows B. know C. have know D. is known
【答案】A
【解析】考查主谓一致。该句的主语为nobody,动词用第三人称单数。故选A。
27.The fire destroyed ________ was in the building.
A.all B.what C.that D.which
【答案】B
【解析】此题考查宾语从句,用关系代词what,替代从句中的主语。
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