Liz suddenly felt something ________ her on the shoulder.

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This school is only for children ________ first language is not English.

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The writers of comedies often try their best to make people ________.

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More advanced technical information was ________ from abroad in the 1980s.

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The diamond was ________ the ring when I dropped it.

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It was during 533-544 ________ Jia Si Xie wrote a book called Qi Min Yao Shu.

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－My name is Dean E Beller.

－What does E ________?

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The biggest problem of Chinese farmers is the ________ of arable land.

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It is the children ________ often help the father and mother do the farm work.

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It's going to be a cold day. You ________ wear an overcoat.

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