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Rewrite the sentences 
----- Nội dung ảnh -----
- A lot of schools.
9. The traffic was so heavy that we couldn’t come back home before 8 P. M.
- It was such...
10. They will open the flower garden to the public for ten days.
- The flower garden...
11. When he was young, he went swimming every morning. He doesn’t do it anymore.
- He used...
12. If it doesn’t rain, there will be a shortage of water.
- Unless...
13. “What’s your favorite subject at the university, Nga?” the interviewer asked.
14. “What are you going to do after you graduate from school?” she asked me.
15. “Is there a good art department at school?” he asked me.
- He asked...
16. Having a vacation abroad is very interesting.
- It is...
17. Did Alexander Graham Bell invent the telephone?
- Was...
18. They have sold that old house at the end of the road.
- That...
19. Harry’s house is still in Spain, isn’t it?
- Harry still lives...