I _ over 2500 kinds of stamps so far.A.collected B.have collecting C.have collected D.have beenD.have been collected

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I_over2500kindsofstampssofar.A.collectedB.havecollectingC.havecollectedD.havebeenD.havebeencollected

I _ over 2500 kinds of stamps so far.A.collected B.have collecting C.have collected D.have beenD.have been collected
I _ over 2500 kinds of stamps so far.A.collected B.have collecting C.have collected D.have been
D.have been collected

I _ over 2500 kinds of stamps so far.A.collected B.have collecting C.have collected D.have beenD.have been collected
C
现在完成时.

so far 表示到目前为止,此句应该是用现在完成时态,所以排除A和B
我收集邮票,是主动并非被动,所以排除D
答案: C

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