1. Study (present simple)
2. Walk (present simple)
3. Go (present simple)
4. She is helping (present continuous)
5. Work (present simple)
6. Pete is traveling ( present continuous)
7. Wake ( present simple)
8.They aren’t talking ( present continuous)
9. Doesn’t cook ( present simple)
10. Ann is singing ( present continuous)
11. Is she working (present continuous)
12. Do they go ( present simple)
13. Someone is knocking (present continuous)
14. The man who is reading (present continuous)
15. Watch (present simple)