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He has been working in a cattle __________ for five years

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It can’t be denied that English has become an __________ language of the world.

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Canada is made up _________ 10 provinces and 6 territories

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According to the schedule, the train __________ at 12 a.m.

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What is _________ official language of your country?

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Trung speaks English like a native __________ though he comes from Vietnam.

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Koalas are well-known as the symbol __________ Australia.