Combine each pair of sentences into one, using relative pronouns / adverbs

Combine each pair of sentences into one, using relative pronouns / adverbs
1. The car is very modern.  Mr Lam is driving the car 
2. The girl is the secretary. You saw the gril at the desk 
2. William is my uncle . I went fishing with William last Sunday 
3. The girl is very beautiful. Her dress is red 
4. The field is very fertile. They plant potatoes in the field
5. I don't know the girl. You went with her yesterday
6. Do you know the boy?  He sat next to me at the dinner party 
7. The man is a doctor. My parents bought the man's house