26. We both enjoy _________________ jokes . (tell)

25. Pedro is a little ________________ than Sam . (heavy)

24. Sunday is the _______________ day of the week . ( one )

23. My hair is shorter than ________________ . (she)

22. Cars are ____________________ than bikes and buses . ( fast)

21. Do you like lettuce in _____________________　 ?　 (sandwich)

20. It' s not______________________( 必要的) to go to bed too late .

19. I think differences are not important in a ___________________( 友谊 ).

18. The _____________________( 相反) of thin is heavy .

17. He is __________________( 卤莽) than Sam .