They drank tea when I came home.
He walked along the river when a boat passed.
The old man thought about his plan when he feel asleep.
We listened to an interesting lecture yesterday.
When I entered the classroom, the teacher wrote words on the blackboard and the pupils coped them into their exercise-books.
They got ready to go out when it began raining.
Yesterday at one o'clock I had lunch at the canteen.
When he came in, I did my exercises.
What you did at eight o'clock yesterday?
At this time yesterday I went home.
You slept when I went out.
He read on the sofa when I came in and sat down beside him.
I walked along the street with my friend when I seen her.
We answered the teacher's questions when the headmistress entered the classroom.