题目内容

Would you please buy some milk, David？
There_______ in the fridgc.

A. aren’t many
B. are very few
C. isn’t much

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---Can I help you？
--Well, I &39;m afraid the box is_______heavy for you, but thank you all the same.

A. so
B. much
C. too

You should always _______some time practicing English if you want to make progress.

A. take
B. spend
C. use

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A. 敞开井口放喷
B. 开井循环
C. 节流泄压
D. 继续观察

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A. 普通开关
B. 单独的线路
C. 普通灯泡
D. 保护接地线