问题补充:
Shirley a book about China last year, but I don know whether she has finished it.
A. has written
B. wrote
C. had written
D. was writing
答案:
A. has written
B. wrote
C. had written
(答案→)D. was writing
解析:受last year的干扰而误选B项,但句意为Shirley去年(一段时间)在写一本有关中国的书,但我不知她现在是否写完,因此答案为D.