The light bulb ______ by Edison in the middle of the 1780s. A．is invented B．was invented C．invented ...
2023-02-17 07:33:59 38次 2012-2013学年内蒙古九年级上学期期末考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The light bulb ______ by Edison in the middle of the
1780s.
A．is invented B．was invented C．invented D．invent
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