1. What does your sister do ?
2. How many students in her school ?
3. What are these ?
4. Who is that ?
5. Where do you live ?
6. Who is she ?
7. Which grade does she in ?
8. Are they cats ?
9. Are you a doctor ?
10. What does your sister do ?
11. How many students in your class ?
12. What are these ?
13. How old are you ?
15.How are you?
16. What is his name ?
17. Where are they ?
19. Where do you live ?
20. Are those your books ?
