1. I met Mary, who asked me to give you this.
2. He is the customer whose address I lost.
3. She is the novelist whose book won first prize.
4. She was dancing with a student who had a slight limp.
5. I am looking after some children who are terribly spoiled.
6. The bed, which I slept on, had no mattress.
7. I was sitting in a chair that suddenly collapsed.
8. This is the story of a man whose wife suddenly loses her memory.
9. I was waiting for a man who didn't turn up.
10. The car crashed into a queue of people, four of whom were killed.
11. I saw several houses, most of which were quite unsuitable.
12. Tom, who had been driving all day, was tired and wanted to stop.
13. Ann, who had slept in the back of the car, felt quite fresh.
14. Paul wanted to take the mountain road, whose tyres were nearly new.
15. We lit a fire that soon dried out our clothes.
16. He paid me $5 for cleaning the windows, most of which hadn't been cleaned for at least a year.
17. Romeo and Juliet were lovers whose parents hated each other.
18. There wasn't any directory in the telephone box from which I was phoning.
19. This is Mrs. Jones, whose son won the championship last year.
20. I bought a dozen eggs, six of which broke when I dropped the box.