19. Yesterday I met a man who works with your brother.
20. I know a shop which swlls reallu good meat.
21. I watched a movie which was interesting last night.
22. The boy whom I know from school is very nice.
23. The shoes which my mother bought for me are too big.
24. Kate helps a man who is my teacher.
25. I still have the book which you gave me.
26. Did you hear about the earthquake  which occurred in California?
27. A river which is polluted is not safe for swimming.