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最佳答案：Are these books yours?No,they are not mine.
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最佳答案：She is our teacher but not theirs.2 this isn't my notebook but it's yours.3 are
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最佳答案：These trees must be planted in spring.These photos might be taken in 2001.These
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最佳答案：1 there is a book and two dictionaries in my bookcase.2 the chair is under the t
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最佳答案：1、The books sold so well that they were all sold out in 2 days.（两个sell即sold的用法不一