"Thank you" is widely（1）

used

used

（use） in the modern society，it is a very good manner.You should say "thank you" whenever others help you or say something kind（2）

to

to

you.For example，when someone（3）

opens

opens

（open） the door for you，when someone says you have done your work well，when someone says you have（4）

to buy

to buy

（buy） a nice shirt or your city（5）

is

is

（be） very beautiful，you should say "thank you". "Thank you" is used not only between（6）

friends

friends

（friend），but also between parents and children，brothers and sisters，husband and wife.
    "Excuse me" is another short polite usage，we use it as the same as "thank you"，when you hear someone says so behind you，you should know that someone wants to walk past you without（7）

touching

touching

（touch） you.It is impolite to interrupt（打擾） others while they are （8）

talking

talking

（ talk） .If you want to have a word with one of them，please say "excuse me"（9）

first

first

（one），and then began to talk.
    You should also do so when you want to cough or make any （10）

unpleasant

unpleasant

（pleasant） noise before others.