I’m surprised to see you are a chain smoker. You , I remember.A. didn’t use to be B. must

发布时间：2020-08-16 10:11:42

I’m surprised to see you are a chain smoker. You       , I remember.
A. didn’t use to be
B. mustn’t
C. used not to
D. didn’t have to

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(答案→)A. didn’t use to be
B. mustn’t
C. used not to
D. didn’t have to
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