They lived a hard life and were often made for over ten hours a day.A. workB. to workC. t

问题补充：

They lived a hard life and were often made for over ten hours a day.

A. work

B. to work

C. to working

D. worked

答案：

A. work

(答案→)B. to work

C. to working

D. worked

解析：考查不定式用法。Make sb do sth让某人做某事；变成被动语态的时候，要加上不定式符号to,构成sb be made to do sth;故B正确。