Past Simple\ Past Continuous.1.They (to drink) tea when I (to come) home.2. He (to walk) along the river when a boat

1. They were drinking tea when I came home. 2. He was walking along the river when a boat passed. 3. The old man was thinking about his plan when he fell asleep. 4. We listened to an interesting lecture yesterday. 5. When I entered the classroom, the teacher was writing words on the blackboard and the pupils were copying them into their exercise-books. 6. They were getting ready to go out when it began raining. 7. Yesterday at one o\'clock I was having lunch at the canteen. 8. When he came in, I was doing my exercises. 9. What were you doing at eight o\'clock yesterday? 10. At this time yesterday I was going home.