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9.There __________ to be a lot of manatees fifty years ago..

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8.Manatees are about 10 _________ long.

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7.He’s ________________ for the job very much.

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6.Many tall buildings were __________ in our city a few years ago.

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5.It’s harmful for the villagers to eat or drink the ______________ food or water.

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4.I was ____________ to find hardly anyone in the zoo.

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3.I don’t understand what the teacher says because he speaks too ______________ .

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2.Kangaroos are _____________ and chimpanzees are noisy.

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feed  foot  build  recycle  play  quick  pollute  suit   surprise  use

1.I’m considering _______________ some waste paper to raise some money for homeless children.

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10. Don’t use        (塑料的)bags.

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