1. (2021九上·拜泉月考) 阅读短文，回答下列问题。

American people like to say "Thank you" when others help them or say something kind to them. People of many countries do so, too. It is a very good habit.

You should say "Thank you" when someone passes you the salt on the table, when someone walking ahead of you keeps the door open for you, when someone says you have done your work well or you have bought a nice thing. or your city is very beautiful.

"Thank you" is used not only between friends, but also between parents and children, brothers and sisters.

"Excuse me" is another short sentence they use. When you hear someone say so behind you, you know the somebody wants to walk past you without touching you.

It's impolite to interrupt others when they are talking. If you want to speak to one of them, say " Excuse me" first, and then begin talking. You should also do so when you begin to cough or make any noise before others.

Let's learn to say "Thank you" and "Excuse me".

1. （1） When do American people like to say "Thank you" according to the passage?
3. （2） Is it a good habit to say "Thank you"?
5. （3） What should you say if you want to walk past someone before you?
7. （4） What does the underlined word "interrupt" mean in Chinese?
9. （5） What should you say when someone says you have done your work well?