试题与答案

We usually take turns ______cleaning ,an

题型:选择题

题目:

We usually take turns ______cleaning ,and today it is my turn ____it

A.to do; doing

B.doing; doing

C.doing ;to do

D.to do ;to do

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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