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最佳答案：son
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最佳答案：son
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最佳答案：They are their son.This is their son.
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最佳答案：the Greens with their sonthe Greens 有格林一家 或格林夫妇的意思
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最佳答案：I miss my son very much!
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最佳答案：son
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最佳答案：My father is their son.
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最佳答案：My elder sister takes care of her two sons at home.学习是一件愉快的事! (*^__^*)请及时采纳,多谢!
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最佳答案：That boy sitting in chair is my uncle's son
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最佳答案：the oldest son the loder son and the youngest son