1) At nine o’clock in the morning Fred was sleeping as it was Sunday.
2) Jack was putting on his coat when the telephone rang.
3) While Andrew was writing an essay, his helper was taking pictures to illustrate the text.
4) When mum opened the door, she saw Greg who was cleaning the hall.
5) Jack was doing his homework at 7 p.m.
6) What did Debbie write in her e-mail?
7) Someone came to visit the Robinsons last Thursday: I saw a car arrive at the door of their house.
8) It was snowing while I was waiting for you.
9) It began to snow when we were reaching the airport.
10) What were you doing at 11 a.m. yesterday?