题目内容

Mary ______ a good girl today.

A. is to be
B. is
C. has been
D. is being

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Thelast half of the 19thcentury _______ the steady improvementin he means of travel.

A. had witnessed
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I bought a new house, but I _________ my old one yet, so at the moment I have two houses.

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D. would sell