Perhaps the day will come ______ our city will be without any pollution.A、whenB

游客2024-07-07 9

问题 Perhaps the day will come ______ our city will be without any pollution.

选项 A、when
B、while
C、as
D、what

答案 A

解析先行词day 后接when 引导的表示时间的定语从句。

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