Поставьте глаголы в одно из прошедших времён. 1) Yesterday I (to watch) TV. I (to watch) TV at 9 o'clock in the evening.

1. Yesterday I watch TV. I was watching TV at 9 o\'clock in the evening. I had been watching TV for half an hour before I realized that I had not finished my homework. 2. I often went to this cinema when I worked here. 3. When we came to the bus-stop the bus had already left. 4. He went for a walk after he had had dinner.