When you have a post-office box, the postman doesn’t bring letters to you, but you go to the post-office and get your letters and parcels from your box. The box is locked, only you have the key, so the letters and parcels are safe.
One day the headmaster of a school wrote to the post-office and asked for a post-office box for his school. He soon got an answer. It said, “We will give you a post-office box in one month.”
Three months later, the headmaster wrote to the post-office and said, “Why haven't we got a post-office box yet?”
This was the answer from the post-office:
“Dear sir,
We gave you a post-office box two months and wrote to you then to tell you. Here is the key to your box. You will find our letter to you in it.”
When you have a post-office box, _____.

A．it is easier for you to write letters	B．you will have more letters than parcels
C．you get your letters in front of your house	D．you got to the post-office to get your letters

The word “key” in this passage means _____.

A．邮件

B．密码

C．编号

D．钥匙

The headmaster _____.

A．wrote many letters to the post-office	B．didn’t like the postman
C．didn’t know how a post-office box worked	D．forgot to pay for the post-office box

When the post-office said that you could get a post-office, he meant _____.

A．you may go to the post-office to get your mails

B．you must wait to get the post-office box

C．you must write again to get the key

D．you must pay for the box before you got it

Which of the following might not be true?

A．If you want to get a post-office box, you must let the post-office know.

B．When you get a post-office box, you have to do the work of a postman.

C．You go to the post-office to get the key to your box.

D．After you get a post-office box, the post man will not send mails to your house.