> 英语 >
the students were writing busily when miss Brown went to get a book she ___ in the office.
这句中填had left,为什么不是left呢?
人气:280 ℃ 时间:2019-12-10 02:53:00
解答
went 已经是过去时态了 过去的过去用过去完成时 所以填had left
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