Ответ:

1. study.

2. am doing.

3. live.

4. works.

5. is working.

6. is helping.

7. move.

8. wear.

9. is not snowing.

10. get up.

11. is sleeping.

12. doesn't like.

13. is looking after.

14. cries.

15. isn't crying.

16. is looking.

17. is singing.

18. is listening.