把下列句子合并成宾语从句
问题描述：
把下列句子合并成宾语从句
Did he watch TV just now?I ask.
Does he live in London My mother wanted to know.
How often are you away from school?The teacher asked me.
答
I ask if he watched TV just now.
My mother wanted to know if he lived in London.
The teacher asked me how often I was away from school.