1. The student was so ________(吸引)in the book that he didn’t hear the bell.
2. What happened in the factory is being_______(私下说) about in the neighborhood.
3. She likes __________(指示) the direction by pointing with her finger.
4. They ___________(交换) things according to the cost of production.
5. A gentleman with good _________(礼貌) will be respected by others.
