There are times when people are so tired that they fall asleep almost anywhere. We can see there is a lot of sleeping on the bus or train on the __1__ home from work in the evenings. A man will be __2__ the newspaper, and seconds later it __3__ as if he is trying to __4__ it. Or he will fall asleep on the shoulder of the stranger __5__ next to him. __6__ place where unplanned short sleep __7__ is in the lecture hall where a student will start snoring (打鼾)so __8__that the professor has to ask another student to __9__ the sleeper awake. A more embarrassing (尴尬的) situation occurs when a student starts falling into sleep and the __10__ of the head pushes the arm off the __11__， and the movement carries the __12__ of the body along. The student wakes up on the floor with no __13__ of getting there. The worst time to fall asleep is when __14__. Police reports are full of __15__ that occur when people fall into sleep and go __16__ the road. If the drivers are __17__， they are not seriously hurt. One woman's car, __18__ , went into the river. She woke up in four feet of __19__ and thought it was raining. When people are really __20__， nothing will stop them from falling asleep—no matter where they are.
