用所给单词的适当形式完成句子。
1. More and more _____ (danger) animals need to be protected by us.
2. Don't worry. We _____ (support) you when you have the match.
3. _____ (recycle) paper to save trees is very important.
4. Your house is very old. It should be _____ (pull) down.
5. Why are you _____ (wear) a coat in such hot day?