七、任务型完形填空
阅读下面的短文,用方框中所给词的适当形式填空,使文意通顺,结构正确。(每个单词限用一次)
have wall hold care begin forget excite be small throw
So far,rock climbing 1. a popular hobby that many people enjoy doing. You can do it indoors on special 2. or outdoors on real mountains. There are many advantages of rock climbing—it is fun and it also helps people 3. worries.
The most important equipment(装备) 4. is a pair of good shoes.
The shoes need to be half a size 5. ______ than your usual size. The next thing you need is a harness(保护带). This will make you move freely, but 6. ______ you up if you fall. It's important to know how to use your equipment. Otherwise, it may be dangerous. If you are a beginner,it's best to take some courses. A climber with experience can help you a lot in the 7. ______ .
Rock climbing is very 8. for people of different ages. Climbers,however, must be 9. not to pollute the environment. Sometimes rock climbers leave rubbish on the mountains where they climb. They should take it with them and 10. it away. This will allow future climbers to enjoy a clean environment.

1. has been 2. walls 3. (to) forget 4. to have 5. smaller 6. will hold 7. beginning 8. exciting 9. careful 10. throw