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enjoy the nature at the same time. You can even set up your own climbing wall in your backyard or (3) __________. This way you don’t have to go out and still can keep fit and enjoy the activity.
So how can you start mountain climbing? Many people take a class to learn how to climb and use their equipment. Others join climbing clubs to make new friends with the same interest and go climbing together. If you are a(n) __________ person and like outdoor activities, (25) __________ don’t you try this activity?
A. them B. they C. theirs D. their
A. decrease B. reduce C. increase D. raise
2 A. indoor B. inside C. within D. among
3 A. effective B. effect C. effectively D. effectiveness
5 A. what B. why C. how D. when
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