1) When I rang up my friend, he was sleeping.
2) When my grandfather was watching TV, he fell asleep.
3) When my friend came to see me, I was doing my homework.
4) When I was going to the stadium, I met Kate and Ann.
5) When Nick rang me up yesterday, I was helping my mother.
6) When the children were walking through the wood, they saw a fox.
7) When I came home, my sister was washing the floor.
8) When Mike was playing in the yard, he dound a ball.
9) When I was drawing yesterday, I broke two pencils.
10) When I met Tom, he was going to the shop.
11) When I looked out of the window, the children were playing hide-and-seek.
12) I went to the theatre yesterday.
13) At seven o'clock yesterday I was goin to the theatre.
14) What were you doing at 5 o'clock yesterday? - I was playing the piano.
15) When I came to school, the children were standing near the classroom.
16) We were playing in the yard the whole evening yesterday.
17) When I was preparing breakfast in the morning, I cut my finger.
18) Last year I went to the United States.
19) Did you go to Great Britain last year? - No, I went to France.
20) What did you do yesterday? - I translated a very long article.