2) Teaching gives me pace, and variety, and challenge, and the opportunity to keep on learning.
3) Being very short of money and wanting to do something useful, I applied.
4) Having little in common is a frequent cause of divorce.
5) Owing sets of books is useless unless you read them.
6) Drinking, eating, and smoking excessively can do severe harm to even a young person s health.
7) The art of communication requires learning the language and culture of the audience.
（编辑：赵颖茹）
