问题
选择题
Helen ______ a book about China when I went to visit her last year but I haven't read it yet. [ ]
A. has written
B. wrote
C. had written
D. was writing
答案
答案：D
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Helen ______ a book about China when I went to visit her last year but I haven't read it yet. [ ]
A. has written
B. wrote
C. had written
D. was writing
答案：D