In England,“Thank you!”is the polite sentence of daily life. When someone gives you some help, you should say”Thank you!”to him. When you buy something, you should say”Thank you”to the salesgirl or the salesman in the shop. When a meeting or a class is over, the speaker or your teacher always says“Thank you”to the people or the students.

　　Yet, we usually do not say”How old are you?”,”Where are you from?”or”How is your father?”When we meet somebody for the first time, because these are questions of privacy（隐私）.

　　If a person you know very well says”Goodbye”to you, you'd better say”See you later !”to him, especially when you are talking with a girl. If a person you don't know very well says”Goodbye”to you, you should also say”Goodbye”or”Bye-bye”to her.

　　But what to say or what not to say is decided by the situations（情况）. We must remember that in different situations. We should use different words.

(1) Which of the following statements about”Thank you”is true?

A．It is a sentence to show our happiness to receive others' help.

B．We use it almost every day.

C．It is a polite sentence.

D．It is for girls only.

(2) When should we say”Thank you”?

A．You want to borrow something from others.

B．You knock down a young lady.

C．Your wallet is missing．Somebody sends it back to you.

D．Somebody says”Thank you”to you.

(3) Sally is a beautiful girl．You just know her in the party．What should you talk with her?

(4) According to the passage, what is the difference between”Goodbye”and”See you later”?

A．You can not say”See you later”to a girl.

B．When somebody says”Goodbye”to you, you must also say”Goodbye”.

C．We say”See you later”more to our friends, and”Goodbye”to people we first meet.

D．“See you later”is only for family members.

A．The situations.

B．Our mood.

C．We say what we want to say.

D．The weather.