题目内容

The practice of children working in factories has nearly ________.?
A.died outB.died off?
C.called outD.called off?
A?
句意:工厂使用童工的做法已经几乎绝迹了。die out绝迹;die off相继死去;call out 大叫;call off 取消,要用被动形式。?
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