一、
1. To keep our school clean, (垃圾) shouldn't be thrown here and there.
2. When playing in the (走廊), students should avoid pushing each other.
3. Don't waste food. We should eat up the food on the (盘子).
4. We should be willing to communicate (毫不隐瞒地) and honestly with our classmates, and work together to solve problems or challenges that may come up.

二、
different, feel at home, polite, normal
1. Chinese people are always hospitable. They try their best to welcome foreign tourists and make them .
2. People in Japan and people in America behave at the dinner table.
3. Canadians shake hands to greet people in formal situations.
4. It's to enter someone's house without taking off the shoes in Japan.

三、
(2025·无锡市宜兴期末改编) In China, there are many rules for eating. These rules are an important part of Chinese culture. Whether at a restaurant or someone's home, knowing these rules 1. (help) you fit in. People around you will feel more comfortable too.
Chinese table manners come from old traditions. You must follow these rules. If not, you may make people 2. (happy). In fact, many Chinese families 3. (teach) their children these manners since they were very little. Here are some easy rules to remember.
Food is served in big dishes. Most of the time, shared chopsticks 4. (provide) on the table. Use them 5. (take) food to your plate. If there are no shared chopsticks, 6. (watch) others and do the same.
Eat the food people give you. If you can't eat something, finish the rest. 7. (leave) a little food shows you are full.
Never put your chopsticks straight up in rice. People do this at funerals (葬礼). Don't play with your chopsticks. Don't point at things with 8. (they). Don't tap them on the table. Put your chopsticks on your plate when you finish.
When you toast (敬酒), hold your glass 9. (low) than older people's.
Don't be 10. (surprise) if people eat with their mouths open. This is normal in China. Just enjoy your meal.