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6. I wish my friends didn't go on a camping trip without me.
7. I wish he didn't go to school late.
8. I wish my brother weren't tall enough to play basketball.
9. John used to smoke a lot a year ago, but now he doesn't smoke any more. 
11. It's time you went to school.
A11/
1. When did you see Tom?
2. I'd rathr you kept silent in the classroom.
3. He wishes he could pass the examination.
4. We wish we could go out because of heavy rain.
5. I'd rather you didn't come to class late.
6. I wish he could come here.
7. They used to go to Vung Tau last week.
8. I wish I could help you.
9. We strated learning English 4 years ago.
10. My father has given up smoking since last year.