Paper________ by Cai Lun in China about 2000 years ago. A. can be invented B. is invented C. will be...
2022-10-12 13:06:22 33次 宁夏银川市（北塔中学）2018届九年级下学期模拟（一）英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
Paper________ by Cai Lun in China about 2000 years ago.
A. can be invented B. is invented
C. will be invented D. was invented
本题链接：
