(   ) 10. There may be about 1,000 camels       in the world.

   A. leave   B. to leave

   C. left   D. leaves

(   ) 9. Mr Liuwants his son       abroad one day.

   A. study   B. to study

   C. studied   D. studying

(   ) 8. The new law is made to stop people       the environment.

   A. from pollute   B. from polluting   C. to pollute   D. for polluting

(   ) 7. Please       all these food. Mum. I'm not hungry.

   A. take away   B. take out

   C. take off   D. take down

(   ) 6. The young man is       to carry the heavy box.

   A. enough strong   B. strong enough   C. too strong   D. so strong

(   ) 5. ―How many blue whales are there in the world today?

―I'm not sure. There       more than one thousand left.

   A. must be   B. may have

   C. may be   D. maybe

(   ) 4. Sorry,I can't come to your birthday party,because I have to       my mother. She is ill.

   A. look after   B. look at

   C. look out   D. look up

(   ) 3. Can you       her name?

   A. think over   B. think about

   C. think hard   D. think of

(   ) 2. The pandas will have enough nature parks      

   A. to live for   B. to live in

   C. to live on   D. live on

(   ) 1. We have helped the animals in danger       there is still a lot of things to do.

   A. so   B. and

   C. but   D. or