You're supposed to keep the classroom . A. clean B. cleans C. cleaned D. cleaning
2022-11-05 16:48:06 104次 2017年秋学期山东省日照市九年级Unit11Unit 11 Sad movies makes me cry.单元检测题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
You're supposed to keep the classroom .
A. clean B. cleans C. cleaned D. cleaning
本题链接：
