题目内容

【题目】He a lot since he _____ the Reading Club.
A.learn , join
B.has learnt, joined
C.learnt , joined
D.is learning, join in

【答案】B
【解析】句意:自从他加入了阅读俱乐部,他已经学了很多。since自从,作连词时,引导的从句用一般过去时,主句用现在完成时,故选B。

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