He _____ when the UFO arrived. A. was sleeping B. were sleeping C. has slept D. is asleep
2022-12-26 05:09:41 183次 2014-2015学年山东德州庆云县第二中学八年级6月月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
He _____ when the UFO arrived.
A. was sleeping B. were sleeping
C. has slept D. is asleep
本题链接：
