阅读下面短文,从短文后各题所给的四个选项(A, B, C和D)中,选出可以填入空白处的最佳选项飞并在答题卡上将该项涂黑。
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)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 womanˈs 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.