The boy has ---it a rule never to hurry

问题描述:

The boy has ---it a rule never to hurry
A made Bgot CtookDformed 为什么选a

A
it是形式宾语,真正的宾语是不定式never to hurry.
make it a rule to do sth.把做某事作为一个规律
这个男孩平常做事从不匆忙.