---This is useful machine which was made in ________thirteenth century
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推荐题目
The car accident happened ____ a cold winter morning. Luckily, no one was hurt.
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---- Did you have ________ good time in Jiangsu?----Yes, I did. It was ________ amazing trip.
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—The charity show is really wonderful.—Yes. I think it’s ________ great success.
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—What’s _____most useful invention in the 20th century? —_____ computer, I think.
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