he looked as if he ill
He looked as if he ____________ill for a long...
He looked as if he ____________ill for a long time．（ ）
A. was
B. were
C. has been
D. had been 展开
A. was
B. were
C. has been
D. had been 展开
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答案D．
根据后面的时间状语"for a long time"可知表语从句"as if he ____________ill for a long time"中应该使用完成时态，可排除A和B；再根据谓语动词looked可知：表语从句中应该使用过去完成时，可排除C；故答案选D．
根据后面的时间状语"for a long time"可知表语从句"as if he ____________ill for a long time"中应该使用完成时态，可排除A和B；再根据谓语动词looked可知：表语从句中应该使用过去完成时，可排除C；故答案选D．
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