1.It is a good habit to brush your        (tooth) after each meal.

2. Many school things were         (send) to Yushu last month.

3. Betty is often seen        (help) the old man with his housework.

4. He prefers         (take) part in the public activities rather than stay at home alone.

5. They         (agree) with each other,  so they argued for a long time.

6. Animals are our friends, so       (protect) them is our duty.

7. You have        (award)a scholarshrp to study violin at our School of Music.

8. It takes         (little) time to go there by underground than by bus.

9. Many       (butterfly) have round marks on their wings that look like eyes.

10. Last night it rained        (heavy)in the southern part of the city.

11. There are many        (different) between the two languages.

多年来，武汉致力于援藏，对西藏的发展做出了巨大贡献。这体现了我国处理民族关系的原则是[ ]

A．民族区域自治制度

B．尊重各民族的宗教信仰、风俗习惯和语言文字

C．民族平等、团结和共同繁荣