When you the bike?A、was... boughtB、have... boughtC、did... buyC本

游客2025-07-02 8

问题 When ______ you ______ the bike?

选项 A、was... bought
B、have... bought
C、did... buy

答案 C

解析本题是when 引导的特殊疑问句，问过去某一动作在什么时候发生，应该用一般过去时态。Buy 用主动语态即可。

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