1. Present Simple Present Continuous Past Simple Present Perfect exercise 1
2. Present Simple Present Continuous Past Simple Present Perfect exercise 2
3. Present Simple Present Continuous Past Simple Present Perfect exercise 3
4. Present Simple Present Continuous Past Simple Present Perfect exercise 4
5. Present Simple Present Continuous Past Simple Present Perfect exercise 5
6. Present Simple Present Continuous Past Simple Present Perfect exercise 6
7. Present Simple Present Continuous Past Simple Present Perfect exercise 7
8. Present Simple Present Continuous Past Simple Present Perfect exercise 8
9. Present Simple Present Continuous Past Simple Present Perfect exercise 9
10. Present Simple Present Continuous Past Simple Present Perfect exercise 10
11. Present Simple Present Continuous Past Simple Present Perfect exercise 11
12. Present Simple Present Continuous Past Simple Present Perfect exercise 12
13. Present Simple Present Continuous Past Simple Present Perfect exercise 13
14. Present Simple Present Continuous Past Simple Present Perfect exercise 14
15. Present Simple Present Continuous Past Simple Present Perfect exercise 15
16. Present Simple Present Continuous Past Simple Present Perfect exercise 16
17. Present Simple Present Continuous Past Simple Present Perfect exercise 17
18. Present Simple Present Continuous Past Simple Present Perfect exercise 18
19. Present Simple Present Continuous Past Simple Present Perfect exercise 19
20. Present Simple Present Continuous Past Simple Present Perfect exercise 20