1. David came in when the children were writing a test.
2. Mike phoned me when I was taking a shower.
3. Mike was speaking to me when his little sister took his book out of his schoolbag.
4. We met them when we were standing at the bus stop.
5. I was sleeping when his mother came back.
6. On Monday Mary was cooking lunch when the postman (rought her a letter from her friend.
7. When the teacher came into the classroom, the children were sitting at their desks.
