问题补充：
---Who the book ?
--- It was written by Lu Xun.
A. is …written by
B. did ,write
Cwas, written
D. was, written by
答案：
A. is …written by
B. did ,write
C. was, written
(答案→)D. was, written by
解析：句意：这本书是被谁写的？——是被鲁迅写的。Be done表示被动语态，结合句意是一般过去式的被动语态，主语是第三人称单数用单数，结合句意，故选D.
