一 ．单词应用
根据单词的首字母或汉语意思填写正确单词，注意形式变化。
1. You must s_____________ calm when something happens suddenly.
2. The box _____________ 110 pounds.
3. She is a____________ to tell others that she didn’t pass the exam.
4. In order to lose w____________, you’d better take more e____________.
5. The book is very valuable. In fact, it is a p____________ book.
6. F___________ is the mother of success.
