题目内容

There are so many kinds of MP4 players in the shop. I can’t decide _____.

A. what to buy
B. which to buy
C. when to buy

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Ladies don’t like others to ask them ____.

A. how old are they
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C. how old they are

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A. to not play
B. not to play
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A. 铅垂直线
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C. 抛物线
D. 无法确定

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