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-Chris, why haven't you gone to the Great Wall with them?

-I have already been there three times.

-When ________ you ________ there?

-In 1990, 1996 and 2001.

[  ]

A.have…been
B.did…go
C.will…go
D.have…gone
答案:B
解析:

因為回答是過去時,所以問的一定是過去時間發(fā)生的事情,所以用過去時時態(tài).


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