Сделайте 6. a: i (call) you last night after dinner, but you (be, not) there. where were you? 7. when i (walk) into the busy office, the secretary (talk) on the phone with a customer, several clerks (work, busily) at their desks, and two managers (discuss, quietly) methods to improve customer service. 8. i (watch) a mystery movie on tv when the electricity went out. now i am never going to find out how the movie ends. 9. sharon (be) in the room when john told me what happened, but she didn't hear anything because she (listen, not) 10. it's strange that you (call) because i (think, just) about you. паст симпл и паст континиус
100% правильное, ибо у меня Advanced Level.