The math problem is so difficult that only few students can _______.A．work on it_刷题宝

题干

The math problem is so difficult that only few students can _______.

A．work on it

B．work for it

C．work it over

D．work it out

上一题下一题 0.65难度单选题更新时间:2019-06-04 11:21:31

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