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最佳答案：it varies within the range between A and B.it is varying between A and B.it fluc
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最佳答案：Anyway,she has changed a lot.
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最佳答案：The world will change a lot.
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最佳答案：change 名词、动词,变化.作动词用：My hometown has changed a lot.作名词用：There have been a lot of
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最佳答案：In recent years,his habits way of life has changed significantly
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最佳答案：He is greatly interested in the changes taken place in his hometown.