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She has ( ) a member of the swim team for 6 years.A.been B.became .选什么?原因

分类: 作业答案 • 2021-11-20 10:21:24

问题描述：

She has ( ) a member of the swim team for 6 years.A.been B.became .选什么?原因

答

a 表示状态,可以持续
而became 是动作,短暂的,不能和延续时间连用