1. In those days, he used to give _____ a part of his income to help his friend.
2. Both sides argued with reason, and neither would give _____.
3. If they are burned, they give _____ poisonous gases.
4. When they made ready to climb the next ridge（山脊）， they found that their oxygen had given ______.
5. Both the man and horse gave _____ after the long ride.
6. All hope of finding the missing aircraft was given _____ and the search stopped.
7. Mary had to give _____ her job after her marriage.
8. 举行音乐会
9. 演讲，做报告
