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she ---the sports club for 3weeks,so she is much healthier t

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she ---the sports club for 3weeks,so she is much healthier than before.
A has joined,B has joined in C,has been a member D has been in 选哪个为什么,
she ---the sports club for 3weeks,so she is much healthier t
选D吧.题中有for,说明是现在完成时标志,应该用has/have.但是这道题是把短暂性动词变成延续性动词.所以A and B是不对的.C中少了of.所以应该选D