Present Perfect / Past Simple. Use either the Present Perfect or

Present Perfect / Past Simple. Use either the Present Perfect or Past Simple in the following sentences. A) Past Simple B) Present Perfect14. Im not sure we ____ (to meet) before.15. You ____ (to be, always) my closest friend.16. When you _____ (to go) to Brazil? 17. Its two months since I _____ (to start) diving me car. 18. This is the first time I ______ (to eat) so many hamburgers.19. My father ______ (to work) for that company for 5 years. Than he gave it up.20. I ______ (to use) to be afraid of dogs. 21. Susan ______ (to use) to sit in her room and play the piano for hours.