_________nearly six years since I started to study English．A.It was B.There are

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问题 _________nearly six years since I started to study English．

选项 A.It was

B.There are

C.It is

D.There have been

答案D

解析since后的句子用一般过去时，主句用现在完成时，这是固定用法，故选D。

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