15. I think you are right. (否定句, 一般疑问句)

14. He saw the TV news yesterday evening. (否定句, 一般疑问句, 反意疑问句)

13. John does his homework at home. (否定句, 一般疑问句, 反意疑问句)

12. Tom has his lunch in the school. (否定句, 一般疑问句, 反意疑问句)

11. There will be a report on Chinese history tomorrow. (否定句, 一般疑问句)

10. There is an English test on Friday. (反意疑问句)

9. All the students in our class are going to visit the Science Museum. (否定句, 一般疑问句)

8. Both Mary and Tony are good students. (否定句, 一般疑问句)

7. Stand in front of the class. (否定句, 反意疑问句)

6. Don’t be noisy, please. (用quiet改为肯定句,)