我想问二题英文题

问题描述:

我想问二题英文题
It is ____who saved the drowning boy.
A man c he
为什么A不对,答案是C
2 I "ve worked with children before, so I know what _____ in my new job.
B to expect C expect 为什么B不对,答案是C

C it's ...who ...c something expect something