When the teacher came into the classroom, the students ____ in groups. A．work B．have worked C．were w...
2023-02-17 07:04:36 55次 2012-2013学年北京市通州区中考二模英语卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
When the teacher came into the classroom, the students
____ in groups.
A．work B．have worked C．were working D．are working
本题链接：
