She has ( ) a member of the swim team for 6 years.A.been B.became_英语解答

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

人气：248 ℃　时间：2019-10-04 12:46:23

解答

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