When was________umbrella________? A. /; invented B. the; looked for C. an; discovered D. the; invent...
2022-10-28 08:10:58 180次 人教版九年级下册英语 unit6 第4课时（sectionB 1a-1e）测试 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
When was________umbrella________?
A. /; invented B. the; looked for C. an; discovered D. the; invented
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