1. if a person’s profession is to keep financial accounts, we call him or her an a__________ . 2. v__________ are people who offer to do something without asking for pay. 3. the t_________ of relativity has a deep effect on research in physics. 4. it’s good customs for young people to r__________ the old. 5. to know some french is an e_______ , if you want to take a holiday in paris. 6. the workers have been d____________ for a higher salary for a long time. 7. exchanging good whishes on the new year’s day is a t________ chinese custom.
