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Bill is good at playing computer. He is an e________ in that field.

根据句意及首字母提示补全单词

Some birds fly back again because of the i________ in environment.

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Oh dear, there is a big w________ in your leg and blood is running.

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There was a football match last night. But I m ________ it.

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--What happened to Jack?

--He fell over and hurt his right k________ just now.

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What illness does he often get? F________.

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What's wrong with you, young man? I've had a f _________.

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All the people in the world like to lead a p________ life.

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At nine o'clock he went to bed and fell a________ quickly.

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This elephant is quiet and friendly. You'll be safe to r_________ out.