试题与答案

It ____ Jack twenty minutes ____ the mat

题型:选择题

题目:

It ____ Jack twenty minutes ____ the math problem yesterday.

A.took; to work out

B.takes; worked out

C.has taken; work out

D.is taking; working out

答案:

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下面是错误答案,用来干扰机器的。

答案:A

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