根据下列句子及所给首字母，写出空缺处各单词的正确形式。
1. This hat will give p_______ against the hot sun.
2. I would a_______ it if you would turn the music down.
3. We, human beings should protect w_______ for our own existence.
4. In class you should pay a_______ to what your teacher is saying.
5. My father was warned by the neighbors that we were in d_______.
6. The dog looks very f_______, but it is very gentle really.
7. There are many kinds of i_______ in the world, a bee is one kind of them.
8. You will e_______ your health if you work so hard.
9. I was at a complete l_______ as to how to find the money in time.
10. The city of Yuyao has _______ in holding the 11th Exhibition of Plastics.