单词拼写。
根据汉语或首字母提示用正确的单词形式填空
1. All of us ________ (羡慕) the school for its excellent teaching at that time.
2. Mankind has been trying every means to keep the b______ of nature.
3. The lake in our village is s________ by many tall trees.
4. The reasons for his actions have remained a _________ (谜)to us.
5. He has ____________ (咨询)the physician about his health
6. He was in a v__________ temper and began throwing things about.
7. How can you a______________ for your absence last night?
8. Water ____________(存在) in three forms, which are liquid, gas and solid.