C,时间状语从句是一般过去时,只有C符合
你弄丢图书馆的书时发生了什么?
What( ) when you lost the library book?A did happen B is happening C happened D was happening.
What( ) when you lost the library book?A did happen B is happening C happened D was happening.
选哪一个 为什么选那一个 这句话应该怎么翻译
选哪一个 为什么选那一个 这句话应该怎么翻译
英语人气：439 ℃时间：2019-11-13 06:39:42
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