24. The report ____ he has invented a new instrument that tells the time is true.

23. You have no idea ____ excited I was at that time.

22.My suggestion is ____ we go to the People’s Park on foot.

21. Do you still remember ____ it used to be a big lake?

20. The question is _____ word is more exact, this one or that one?

19. ____ the sun in the morning looks bigger than the sun at noon is very interesting.

18. I doubt ____ his advice will be helpful to our work.

17. It seems ____ Tom’s plan is a good one.

16. Could you tell me ____ pronunciation is the best in your class?

15. ____ he has promised to do for me is to help me with my English.