根据句意和所给首字母,在句子空白处填入适当的单词。
1. Everyone should care for wild animals in d_________.
2. His book is very thick(厚的),but mine is t_________.
3. Our h_______ is becoming more and more beautiful.
4. She always gets n________ before a big exam.
5. You are s________ to study hard when you are at school.
6. He lives in a very poor v_______, so his parents can't afford his education.