There are times when people are so tired that they fall asleep almost anywhere. We can see a lot of people sleeping on the bus or train on their way home ____ work in the evening. A man is reading the newspaper, and seconds later it appears as if he is trying to eat_____. Or he may fall asleep on the shoulder of the stranger  ____ (sit) next to him. Another place where unplanned short sleep goes on is in the lecture hall ____ a student starts snoring so loudly that the professor has to ask_student to shake the sleeper awake. A more embarrassing situation occurs when a student starts falling into sleep and ___ weight of the head pushes the arm off the desk, and the movement carries the rest of the body along. The student wakes up on the floor with no memory of getting there. The ___ (bad) time to fall asleep is when driving. Police reports are full of accidents that occur when people fall into sleep and go off the road. ___ the drivers are lucky, they are not     (serious) hurt. One woman’s car, for example, went into the river. She woke up in four feet of water and thought that it ___ (rain). When people are really tired, nothing will stop them from falling asleep — no matter where they are