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最佳答案：One time when you recall your memories- the life is unpredictable like weather.
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最佳答案：1,essentials.2 it's取 3proves 4to be取掉
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最佳答案：There are different train tickets 1 for people to choose from when travelling 2
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最佳答案：在线性代数中,一个内积空间的正交基（orthogonal basis）是元素两两正交的基.称基中的元素为基向量.假若,一个正交基的基向量的模长都是单位长度1,则
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最佳答案：As a result of his carelessness,he made a lot of spelling mistakes in his essay.
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最佳答案：第二个 应为kitchen
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最佳答案：this is an anti-war...he shoudn't join in the army...he even escaped when...thro
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最佳答案：不要用手机,直接用电脑就能发全啦.
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最佳答案：第一句删去最后的do第二句开头I改为me第三句much改为many第五句tall改为taller第六句play改为playing,get along后加上wit
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最佳答案：Hello.My name is Wu Yifei.I'm 13 years old.I study inNo.50 Middle School.I'm in