have you played the piano?-For four years. A How often B How long C How much D How

发布时间：2020-08-22 09:56:16


---     have you played the piano? ---For four years.
A How often   B How long    C How much      D How many

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解析：A.多久一次  B.多长时间  C.多少钱D.多少个 句意：你弹了多长时间钢琴？——四年。可知选B。
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