为什么括号里要填这个词:The teacher wated to know(if)you went to school yesterday.

问题描述:

为什么括号里要填这个词:The teacher wated to know(if)you went to school yesterday.
还有:
Do you know (whose) son he is?
Him says (that)he went to Mount Emei last week.
Will you please tell me (which) bus i should take?
He wants to know (if)we can hear him clearly.

这里的if引导的状语从句,"wated" 应该是'wanted'吧,这句话的意思是:老师想知道你昨天有没有去学校.