before liberation my parents were made from morning till evening.
问题描述：
before liberation my parents were made from morning till evening.
A.work B.working C.worked D.to work
答
D
make sb.do sth.让、使某人做某事,后跟不带to的动词不定式,但变为被动语态时,to要体现出来不可省略,因此是：be made to do