题目内容

While I () the bus, it started to rain.

A.was waiting for
B.waited for
C.am waiting for

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向上级机关的请示的生效时间是()

A. 上级机关收到请示时
B. 请求成文日期
C. 得到上级机关批复时
D. 请示的印发日期

I () football when I was young.

A.used to play
B.used to playing
C.used to be playing

工业上生产对苯乙烯磺酸钠是利用的____方法。

A. 液体三氧化硫磺化法
B. 气体三氧化硫磺化法
C. 烘焙磺化法
D. 共沸去水磺化法

This jacket is not () for me. I need a bigger size.

A.not enough
B.smaller
C.big enough

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