用所给词的适当形式填空。

1. Jack is a kind young man. He is very _____ (help) and people all like him.

2. We have sports _____ (two) a week.

3. Today is my _____ (one) day at school. I'm happy to see my new classmates.

4. The shop is _____ (close) at this time of the day.

5. Nick loves swimming. He is a good _____ (swim).

6. Sometimes we have dinner at my _____ (grandparent) home.

组织旅客运输的方针和原则是（）。

A.以“保证安全第一，提高工作效率，争取飞行正常”为方针

B.以“保证安全第一，改善服务工作，争取飞行正常”为方针

C.以“保证重点、照顾一般、方便旅客”为原则

D.以“保证一般、照顾重点、方便旅客”为原则