Present perfect / past simple. use either the present perfect or past simple in the following sentences. a) past simple b) present perfect 14. i’m not sure we (to meet) before. 15. you (to be, always) my closest friend. 16. when you (to go) to brazil? 17. it’s 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.