问题补充:
The workers were made for ten hours a day.
A. work
B. worked
C. working
D. to work
答案:
A. work
B. worked
C. working
(答案→)D. to work
解析:D 考查不带to的不定式,即使役动词。使役动词make的用法是:make sb. do sth.,在被动语态中,不定式to必须加上,即sb. be made to do sth.。故选D。“这些工人被迫一天工作10个小时。”