Fill in the gaps with "who" or "how".
1. old is your father? - Thirty five.
2. is that man? - He's my teacher.
3. is playing football? - The boys are.
4. are you? - I'm fine, thanks.
5. speaks French? - I do.
6. do you go to school? - By bus.
7. many classrooms are there in your school? - Twenty-three.
8. long did they stay in London? - Two weeks.
9. 's going to read a book? - I am.
10. do you feel today? - Not very well.