UC知道He ___the person when he was in London.
来源：百度知道 编辑：UC知道 时间：2024/09/20 13:54:53
A. had visited B. visited
我选的A，错了，为什么啊
我选的A，错了，为什么啊
person后是个when不是since
person后是个when
完成时后面是不能接明确的时间的
题目中"when he.....in London"是个具体时间 所以前面不能用完成时,所以排除A 选B 用一般过去时
整个句子是过去时态,所以直接选B就行拉
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