put the verb in brackets into the correct past tense

1. the man (pay) for his new car in cash
2. i (already/eat) breakfast by the time the others woke up
3. it (snow) for three days when suddenly the sun came out
4. Sam (work) here for six years before he left to go to university
5. Liz (go) to the Bahamas for her holidays last year
6. we (watch) a film on tv when our guests arrived
7.they (already/see) the film twice at the cinema when she rented it on video
8. the teacher (teach) the children a song today
9. he (sit) on the train at this time yesterday morning