问题
选择题
Lily _____ a book about China last month but I don’t know whether she has finished it.
A．wrote
B．had written
C．is writing
D．was writing
答案
答案：D
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Lily _____ a book about China last month but I don’t know whether she has finished it.
A．wrote
B．had written
C．is writing
D．was writing
答案：D