1.the children were playing in the house at 6 o'clock ?
2.john was sitting in the house when tom came ?
3.mary was doing her lessons when the telephone rang ?
4. the teacher was speaking at that moment ?
5. the student was reading when the teacher interrupted him?
6. we were having our dinner when we heard the news?
7. i was writing the letter when my frieng came?
8. the child was crying when i came?
9. mother was cooking when the bell rang?
10. he was driving when we saw him ?