24. I know the girl ________ the teacher praised　 yesterday.

23. Do you know the boy ______ was praised at the meeting?

22. Tell me the reason ______ the American lady left.

21. The man _______ wife died last year has gone to Japan.

20. The house ________ was pulled down last week is being rebuilt.

19. I’ll never forget the day _______ I joined the League.

18. This is the hospital ______ her mother works.

17. Happiness is one of the things _____ money cannot buy.

16. The present _____ he gave her yesterday evening is still unopened.

15. They are building a hospital on the street ___ we used to live.