Помогите пожалуйста.Очень нужна помощь. Очень буду благодарен.

задание 1 : 1. was doing, came 2. was waiting 3. What were you doing when I rang you up? 4. was smoking, saw задание 2 : 1. had left, got 2. hadn`t rung, finished 3. came, hadn`t gone 4. had eaten, went  задание 3 : 1. Anybody 2. anybody 3. Nothing 4. Nobody задание 4 : 1. surprising 2. amusing 3. shocked 4. boring