1. Mary asked: "Did you did your homework?"
Mary asked, if I had done my homework.
2. Mary asked: "How old are you?"
Mary asked, how I was old.
3.She asks: "What do you like?"
She asks, what I am like.
4.He said: "I don't know this man."
He said, he didn't know that man.
5.Lena said: "I am busy.
Lena said, she was busy