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最佳答案：I spent three hours in finishing my homework.
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最佳答案：我表兄已经去北京一个月了My elder cousin has been in Beijing for a month!(不可用 to,那是指已经回来了!)
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最佳答案：我认为用现在完成进行时比较好I have been speaking in a really low speed.
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最佳答案：他搬家到了武汉.His family moved to wuhan.一般情况下用一般过去式
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最佳答案：I have been on summer holiday for five days.
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最佳答案：1.This is nille,she's my twin sister.2.This that your uncle?That is your uncle?3
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最佳答案：从句用现在时Ich gratuliere dir,dass du bei der Arbeit Erfolg erzielst.从句用现在完成时,口语中现在完成
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最佳答案：Very pleased and we learn together, we will study together for two and a half ye
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最佳答案：xvntfg
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最佳答案：现在完成时I have ever heard of a story看到补充了!If you are willing to help the other thre