1. She likes to play tennis.
Does she like to play tennis?
What game does she like to play?
Who likes to play tennis?
2. I love my mother.
Do I love my mother?
Who(m) do I love?
Who loves my mother?
3. They are smiling.
Are they smiling?
Why are they smiling?
Who is smiling?
4. He looked up.
Did he look up?
What (Where/When) did he look up?
Who looked up?