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9. Because they performed well, they won that match.

10. Because there is too much exhaust fume, people have to wear gauze masks in the streets. 

11. I suggest organizing a charity event to raise money. 

12. I suggest using banana leaves to wrap food. 

13. They suggested that we should take the entrance examination carefully. 

They suggested that the entrance examination should be taken carefully.

14. Hoa suggested that Nam should put a better lock on the door. 

15. The local authorities suggested taking the garbage to cycling centers. 

16. I suggested that you should go away for a few days. 

I think you should go away for a few days.

17. How about going fishing today? 

I suggested going fishing today.

18. Tom suggests that we should use energy-saving appliances. 

19. What do you suggest we should do on Saturday night? 

20. Mary suggested that we should go to the movies.