[C] To work while travelling.
19. What do we know about life ten orfifteen years ago?
[A] It was harder for people to get intouch online.
[B] The Internet first came into use then.
[C] People enjoyed life more.
20. Why does the man think the sun is veryimportant for his life?
[A] It makes him more active,
[B] It allows him to think better.
[C] It gives him a feeling of comfort.
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