American people divide their days into several blocks of time（美国人将他们一天分成不同

American people divide their days into several blocks of time(美国人将他们一天分成不同的时间区), and plan different activities 1 different times.

American time is "on the dot"(准确地). If something is supposed to happen at Eight o'clock, it will begin at eight. Americans value promptness(准时)and may become angry if a person is more than 15 minutes late 2 a good reason. If you know you are going to be late, call in advance and let someone know. 3 you arrive late, you should apologize and explain why. Americans arrive 4 time for doctors' appointments. The doctor may keep you 5 , but if you keep the doctor waiting, you may get a bill with the doctor's time!

A：for

B：waiting

C：on

D：if

E：without