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。