Smith a book about China last year but I dont know whether he has finished it.A. has wr

问题补充：

Smith a book about China last year, but I don know whether he has finished it.

A. has wrote

B. wrote

C. had written

D. was writing

答案：

A. has wrote

(答案→)B. wrote

C. had written

D. was writing

解析：时态题。句中有last year只能用过去时。