– He looks as if he _____the answer.
--- He has.
A．has knownB．knowsC．had knownD．knew
A
考查as if 從句用虛擬語氣的情況。當說話人認為句子所述的是不真實的或極少有可能發(fā)生或存在的情況時。從句虛擬語氣動詞時態(tài)的形式如下：如果從句表示與現(xiàn)在事實相反，謂語動詞用一般過去時。從句表示與過去事實相反，謂語動詞用“had+過去分詞”。選A。
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