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These foreigners have been to Tibet before.--Really?When__here?A.will they go
These foreigners have been to Tibet before.--Really?When__here?
A.will they go B.did they go C.have they gone
人气:363 ℃ 时间:2019-08-21 09:56:24
解答
B
陈述句是过去完成时,问句go不是过程,而是时间点,所以不能用have done
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