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最佳答案：For whom are they having a birthday party?
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最佳答案：They are doing a survey about the most popular TV programms
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最佳答案：They were discusing with each other when the phone rang.
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最佳答案：They are looking for hotels to live in.
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最佳答案：More-and-more-company-pay-a-lotattation0to--their-quality-of-product.
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最佳答案：1 The are launching a campaign for the living condition of the workers.2 That bo
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最佳答案：Is it a English letter that they are writing?
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最佳答案：1.My mother is washing clothes.2.They are doing different things.3.Tom is playin
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最佳答案：Now the people who are aware of the importance of health take much more care of
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最佳答案：I don’t agree with him that they are discussing the best way to English,the litt