问题
选择题
Mr Smith ____ a book about China last year but I don't know whether he has finished it. [ ]
A. has written
B. wrote
C. had written
D. was writing
答案
答案：D
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Mr Smith ____ a book about China last year but I don't know whether he has finished it. [ ]
A. has written
B. wrote
C. had written
D. was writing
答案：D