Раскройте скобки, поставьте глагол в нужное время (past simple или past perfect): 1. i … (to study) at a university before i started working. 2. by the time i finished working my friends … already … (to go). 3. i … (to learn) well when i was eight years old. 4. when he returned from his journey he … (to tell) me everything about it. 5. i … (to forget) my passport and had to return home. 6. i corrected all the mistakes i … (to make) in my test.