1

Cathy / because / she had seen the film before / didn't go to the youth club

2

Brian and Jenny / they had heard it was boring / because / didn't watch the film

3

Toby / he had broken his leg / was in hospital / because

4

Gemma / and she wanted / had bought a new CD / to listen to it

5

Ian / so his parents / hadn't done his homework / said no

6

Robert / his ticket / he had lost / because / stayed at home