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9. People pour a lot of rubbish into the sea, so they make the water     .

    A. clean       B. dirty       C. clear     D. pure

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8. It's awful to     all those animals in danger.

    A. think about    B. think over    C. think as    D. think highly of

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7.----Something happened to Tony.

    ----Let's      what we can do to help him.

    A. find       B. find out     C. discover    D. look at

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6. It isn't right      whales      elephants for their meat.

    A. to kill, and             B. to kill or   

    C. for killing ,or            D. for killing, and

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5. He was so     to see the elephant.

    A. excited      B. exciting     C. interested   D. interesting

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4.----Can you help me,Betty?

    ----Sorry, I have a lot of things to do .Betty decided      me.

    A. to help      B. to not help   C. not to help  D. don’t to help

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3. We need      environment.

    A. protecting     B. that protect   C. to protect   D. for protecting

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2. The difficulty is     the traffic accident .

    A. to stopping    B. to stop     C. stop      D. stoping

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1. It's difficult     my homework.

    A. for finishing   B. to finishing   C. to finish   D. for finish

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5. Where is Mary’s home ?

  A. It’s near Mary’s factory.    B. It’s in front of the factory.

  C. It’s not near the factory.    D. It’s next to the factory.

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