21. Everyone likes my f ather because        is friendly.

       A. his     B. him   C. he    D. himself

22. Before you go to Canada, you need to learn more          it.

   A. form   B. in     C. by    D. about  

23. Many city people         their bikes to work every day.

       A. ride    B. will ride   C. rode     D. have ridden

24. We have done much to protect the environment. So the river is getting        than before.

   A. dirtier      B. dirty   C. cleaner   D. clean

25. It’s every policeman’s dream to keep people          and the traffic in good order.

       A. safe    B. healthy   C. busy   D. famous

26. --- Look! What’s on the ground?

   --- Oh, it’s my sweater. Please        .

   A. pick it up     B. put it on     C. give it out     D. take it off

27.       you smile at others,they will smile back.

       A. Before     B. When      C. Until      D. Though

28. Tourists’ bad behavior         by the government in our country from now on.

   A. will record    B. will be record   C. records    D. is recorded

29. --- Mum, can you tell me        ? I dreamed of him last night.

       --- Next week.

       A. when my dad comes back           B. where my dad goes

       C. when my dad will come back        D. where my dad will go

30.             on the grass, or it will “city”.

   A. To walk     B. Not to walk   C. Walk     D. Don’t walk