24. He, that is playing an important part, which is well-known to us all.

23. See to that the children don't catch cold.

22. The child is always lying, so none of us will believe no matter what he says.

21.I don't care whether she has no money. I care if she is honest or not.

20. Someone is ringing the doorbell. Go and see who he is..

19. Is this what we met each other two years ago?

18. Jack was soon told why he did was not necessary.　　　　　　　

17. The energy is that makes the cells able to do their work.　　　　　

16. Who leaves the room last ought to turn off the lights.　　　　　

15. Can you tell me who is that gentleman?