I.Fill in the blanks with proper words to complete the sentences, the first letter is given.
1. When you find someone hurt, you should perform first a_____ as soon as possible.
2. It’s impolite to do an i_______ to a person’s reputation.
3. Is money e________ to happiness.
4. The sprain made my ankle s______ up.
5. He fell down onto the ground as he was cleaning the window, and what’s more, he sprained his w_____.