Present Perfect

Exercise 4

Write the Present Perfect, affirmative, negative and interrogative, of the following verbal forms:

1. I go
2. You play
3. She thinks
4. He dreams
5. It snows
6. We forgive
7. You write
8. They drink
9. I eat
10. You understand
11. She wants
12. He calls
13. It works
14. We finish
15. You buy
16. They suggest

The solution is here.