这个句子的时态是()。I have been looking for my lost book for three days, but I still haven’t found it.
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这个句子的时态是()。I have been looking for my lost book for three days, but I still haven’t found it.
A.现在完成时
B.现在进行时
C.现在完成进行时
D.过去完成时
参考答案: