13. The little boy’s bad b____________ at the party made his parents upset.

12. If you want to help the poor, you can join the o________________, which usually has some such activities.

11. “Have you taken part in either of my last two c_____________?” The officer asked the soldier.

10. The document will be　　　　 　to all members. (传阅)

9. I’ll type your report if you’ll baby-sit in　　　　　　 . (交换)

8. As students, we should __________the rules and regulations of our school. (遵循)

7. They couldn’t afford to　　　　 (装备) their laboratories properly because of lack of money.

6. He is an agricultural ___________, who devotes all his life to the research into agriculture. (专家)

5. Though he is young, he is s____________ to support a large family. (努力)

4. All ________ with France was stopped when the enemy gained control of the sea. (通信)