— What ______ your bike yesterday?

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问题选择题

— It didn't work. [ ]

A. was happened in

B. happened in

C. was happened to

D. happened to

答案

答案：D

选择题

When McKie brings friends or volunteers to the area where she works, most of ________ spend the first day sobbing.

A．them

B．whom

C．that

D．which

单项选择题

关于空调的使用保养说明正确的是（）。

A.制冷时，即使“强风”档风量级小取下过滤网

B.室内机组有灰尘，用酒精擦除即可

C.室外机组有灰尘不影响制冷

D.室内空气湿度影响制冷效果，但不影响制热