24. Mary is a vegetarian. I cooked a meal for her yesterday.
=.> Mary, who I cooked a meal for yesterday, is a vegetarian
23. The picture is colourful. I bought it this morning.
=> The picture, which I bought this morning, is colorful
24.Here are the books. They are on wild animals.
=> Here are the book which are on wild animals.
25. The boy is my younger brother. He is playing in the garden.
=> The boy who is playing in the garden is my younger brother.
26. Mr Brown looks very sad. His team has lost the game.
=> Mr Brown, whose team has lost the game, looks very sad.
27. The girl is very friendly. She lives next door to us.
=> The girl who lives next door to us is very friendly.
28. She is the girl. I bought these roses for
She is the girl whom I bought these roses for