Complete the sentences with the correct form, Pst perfect or Past

Complete the sentences with the correct form, Pst perfect or Past Perfect Continious, of the verbs in brackets. 1. We _had been waiting_ (wait) for the bus for a long time whhen a man offered us a lift. (пример/example) 2. We found out that our school ________(be) the best school in our city 20 years earlier. 3.I helped the woman carry her shopping because she ____(push) her shopping trolley with difficulty. 4.I couldnt fall asleep because i _____(watch) horror films all evening. 5. I didnt know that my father_____(travel) to Africa as a student, 6. I failed the exam because i______(not read) the most important book.