6. The car that just passed us was going 90 miles an hour.
刚才从我们身边经过的汽车速度为90英里每小时
7. The man who waved to us was my uncle.
那个和我们挥手的人是我的叔叔.
8. I enjoyed reading the book which you gave me last week.
我喜欢读你上星期给我的那本书.
9. I prefer the subject science.
我喜欢科学.
10. I spoke to the man who is a professor.
我和一个教授说话.