Teenagers really do need more sleep
For questions 1-8, read the text below and decide which answer ( A, B, C or D ) best fits each gap. There is an example at the beginning ( 0 ).
Example:
It has long been suspected that lack of sleep can actually 0 _____ to illness, particularly in young people. Research 1 (1) ____ students aged 14-19 over a three-week period now appears to 2 (2) ____ this.
The teenagers wore devices that recorded the movements they made, without being 3 (3) ____ of them, that indicated they were asleep. The results were then 4 (4) ____ to the number of illnesses that they had 5 (5) ____ from during the three weeks, in addition to the number of occasions on which they had been 6 (6) ____ from school.
What the study showed was that students who slept fewer than seven hours a night caught colds, flu and other relatively 7 (7) ____ illnesses more often. The problem is that as children enter their teens their natural sleeping patterns change, 8 (8) ____ in them going to sleep later and therefore wanting to wake up later – but they still have to get up in the morning to go to school.