The students are clever. They have no problems _____ out the math problem.A．work_刷题宝

题干

The students are clever. They have no problems _____ out the math problem.

A．work

B．working

C．works

D．to work

上一题下一题 0.65难度单选题更新时间:2018-09-20 09:07:25

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