his son is often made()a lot of homework.a.does b.do c.to do d.doing
问题描述：
his son is often made()a lot of homework.a.does b.do c.to do d.doing
答
c be made to do sth *做某事，这个句子使用短语makesb do sth 的被动形式，原来不带to的不定式得加to
答
选c
be made to do sth. 被强迫做某事