对下列句子的画线部分提问。
1. My favorite subject is history.
_____ is _____ favorite subject?
2. Jeff likes P.E. because it is relaxing.
_____ _____ Jeff like P.E.？
3. Mrs Jones usually eats breakfast at seven-thirty.
_____ _____ does Mrs Jones usually _____ breakfast?
4. Bob wants to join the chess club.
_____ _____ does Bob want to join?
5. His father can play the violin.
_____ can his father _____?
6. My favorite actor is Zhou Runfa.
_____ is _____ favorite actor?
7. Mary's birthday is September first.
_____ _____ Mary's birthday?
8. His cousin is three years old.
_____ _____ is his cousin?
9. Her new pen is two yuan.
_____ _____ is her new pen?
10. He eats carrots for dinner.
_____ _____ he eat for dinner?