把下列句子合并成宾语从句

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.

1.I asked if he watched TV then.
2.My mother wanted to know if he lived in London.
3.The teacher asked me how often I was away from school.

都是把问句改为陈述句接在后面半句的后面，再注意时态和人称就好
I ask whether he watched TV just now.

My mother wanted to know whether he lives in London.

The teacher asked me how often I am away from school.

现在孩子都聪明了,来网上做作业.