The entire 20 students of this block went out one by one slowly, with disheveled hair and sleepy faces.The resident staff finished this fire drill after counted the number of students.

• 慢慢地，整栋楼20个人都出现了，一个个蓬头垢面、睡眼惺松，宿舍管理人员在清点过人数之后结束了这次演习。