问题
选择题
By the time he graduated from university, he ______ more than two novels.[ ]
A. has written
B. had been writing
C. will have written
D. had written
答案
答案：D
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By the time he graduated from university, he ______ more than two novels.[ ]
A. has written
B. had been writing
C. will have written
D. had written
答案：D