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最佳答案：unable to concentrate on the study.
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最佳答案：He buried his head into writing the essay.
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最佳答案：The scene in which you were reading attentively is deeply impressed in my brain.
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最佳答案：不专心呗.
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最佳答案：The auther so concentrates on writing that forget himself buried with illness.
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最佳答案：都是一些很简单的翻译,没用太高级的词汇：专心 concentrate in ...代替 instead of,substitute for当志愿者：to be
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最佳答案：没少括号,He (sat) (devoted) (in) writing an article."sat"是谓语,没有清楚地时间说明的话,一般情况下用过去时；"
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最佳答案：When driving,be sure not to scatter your attention,but concentrate yourself.
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最佳答案：(We) acceptance:Never recieve badness things,Never make badness things,Never man
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最佳答案：弈秋是僵最会下棋的人.让他教两个人下棋,其中一个人专心致志,只听弈秋的教导；而另一个人虽然在听着,可是他心里总以为有天鹅要飞过来,想拿弓箭去射它.这样虽然他同前