Part 2: Read the text below and think of the word which best fits each space. Use only ONE word in each space. (10 points)
People who are deprived (1).................... sleep lose energy and become quick-tempered. (2).................... two days without sleep, a person finds that lengthy concentration becomes difficult. He can force himself to (3) .................... tasks well for short periods, but he is easily (4) .................... . He makes many mistakes, especially at routine tasks, and his attention slips (5) .................... times. Every “sleepless” person experiences periods in which he (6) .................... off a few seconds or more. He completely falls asleep (7) .................... he is kept active continuously.
Persons who go without sleep for than three days have great (8) .................... thinking, seeing and hearing clearly. They have periods of hallucinations (9) ....................which they see things that do not really exist. They also confuse daydreams with real life and (10) ..................... track of their thoughts in the middle of a sentence.