I

1. didn't go / was raining

2. was having / told

3. were singing / were playing

4. was opening / jumped

5. was riding / realised / didn't have

6. were you dreaming / waked

II 2. I had done my homework when I went out.

3. She had gone to the supermarket. When before that, she found a parking space.

4 I had opened all my christmas presents when my parents came downstairs.

5.Our team had scored five goals, when the referee blew the half- time whistle.

6. He had puted the children to bed, when he sat down and turned on the television.