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 way home from work in the evenings. A man ______1_______(fold) the newspaper, and seconds later, ______2_______ appears as if he is trying to eat it. Or he will fall asleep on the shoulder of the stranger ______3_______ (sit) next to him. Another place where unplanned short sleep goes on is in the lecture hall ______4_______ a student will start snoring（打鼾）so ______5_______(loud) that the professor has to ask another student to keep the sleeper awake.
