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– He looks as if he _____the answer.
--- He has.
A.has knownB.knowsC.had knownD.knew
A
考查as if 从句用虚拟语气的情况。当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。从句虚拟语气动词时态的形式如下:如果从句表示与现在事实相反,谓语动词用一般过去时。从句表示与过去事实相反,谓语动词用“had+过去分词”。选A。
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