Paul doesn't have to be made( ).He is always a hard-working student.

问题描述:

Paul doesn't have to be made( ).He is always a hard-working student.
选择
[a] study [b] to study [c]studied [d] studying
请说明理由为什么选它
注意这个句子是一个被动语态的句子呀?
到底选什么呢?

B
如果是主动态,那就是make sb do sth=让某人做某事
但一旦被动了,就得是sb be made to do sth 了