(   ) 11. ―Mr. Smith,I don't think we can get there on time by bike.

   ―You mean it's        for us to take a taxi.

   A. necessary   B. important

   C. possible   D. difficult

(   ) 10. I can't believe ray own eyes. The magi- cian changes paper        money.

   A. on   B. from

   C. out   D. into

(   ) 9.Waste paper and bottles are collected        recycling.

   A. by   B. aboiit

   C. for   D. from

(   ) 8,We tried to stop the flames from sprea- ding,but we knew it was.

   A. unusual    B. enjoyable

   C. hopeful   D. hopeless

(   ) 7.Please        the lights when you leave the classroom.

   A. turn off   B. turn on

   C. turn up   D. turn down

(   ) 6. is better to use a china cup in- stead of a paper cup.

   A. It   B. What

   C. This   D. They

(   ) 5.Try not to use paper cups or paper bags to help save     .

   A. more trees   B. few trees

   C. much trees   D. less trees

(   ) 4, ―Do you still want to say        ？

     ―No, I want to say nothing.

   A. anything else   B. else anything

   C. something else   D. else something

(   ) 3.It was he who        a work plan.

   A. looked up   B. drew up

   C. took up   D. picked up

(   ) 2.Drinking too much        your health.

   A. do harm to   B. is harm to

   C. does harm to   D. do harmful to