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最佳答案：爱丽丝不确定自己先说话是否合乎礼仪Alice didn't know whether she talked formally
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最佳答案：you go and check whether jack have left or notyou go and check whether jack is
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最佳答案：It's not clear/ whether he get the job/whether we watch the film.More importantl
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最佳答案：1.我们不确定他是否会来.（not sure）We are not sure if he will come.2.学生们正忙着准备下周的考试.（be up to
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最佳答案：I an die happily,but if I am not sure there is heaven how can it be implemented.
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最佳答案：I withdraw the impoliteness words I said just now if you can forgive me.Could yo