who____"The Family","Spring" and "Autumn"____?

问题描述:

who____"The Family","Spring" and "Autumn"____?
A.was,written
B.were,written
C.were,written by
D.are,written by

C
意思是:《家》,《春》,《秋》是谁写的?
三部作品,所以用复数,是过去所写,用一般过去时的被动语态.