问题标题:
【howlonghasyourson___?A.borrowedthebookB.boughtthebikeC.beenbackDreceivedtheletter说明理由】
问题描述:
howlonghasyourson___?
A.borrowedthebookB.boughtthebike
C.beenbackDreceivedtheletter
说明理由
程宏辉回答:
选c,
其余三个选项中的动词都是瞬间动词,不能用来描述一个持续的状态.
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