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最佳答案：They have finished the homework.They finished the homework two hours ago.
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最佳答案：They have worked out a solution to this problem
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最佳答案：I hope (that不知道要加瓦)they don't come to talk with me They have already been good f
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最佳答案：I don't know that they were coming, and was standing at the door
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最佳答案：1. You are supposed not to be too hard to children.2. They have found the way wi
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最佳答案：It seems that these children have known how to get along well with their parenrs
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最佳答案：这个结构和acquaint 这个词的用法有关:acquaint sb.with sth./sb.sb.be acquainted with sth./sb.意思
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最佳答案：We found they had left upon reaching home.
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最佳答案：He is sure to succeed.Many original songs are very beautiful.They have held quit
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最佳答案：So far,she/he/they have produced four albums.