Раскройте скобки, употребляя глаголы в Past Simple или Past Continuous: 1) When I (to ring) up my friend, he (to sleep).

1) When I rang up my friend, he was sleeping. 2) When my friend came to see me, I was doing my homework. 3) What were you doing at 5 o’clock yesterday? I was playing the piano. 4) When I was preparing breakfast in the morning, I cut my finger. 5) When I came to school, the children were standing near the classroom. 6) Last year I went to Canada.