1.children mustn't ride bikes in the street where there are lots of buses .
2.I won't tell you anything I know about him .
3.She likes to read the books that can help her a lot .
4 .I can find the exercises that you did on page 200.
5 .I hope to buy a bag which can contain a lot of smart things .
6 .Beijing University is the one that I want to go to in the future .