问题描述：
Do you want to stop and have a rest?
___,if you insist.
A.Yesa,B.Sure C.All right D.That's right.
选哪个?为什么?
___,if you insist.
A.Yesa,B.Sure C.All right D.That's right.
选哪个?为什么?
问题解答：
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