题目内容：

April 1st is a day on which，in some countries，people can play jokes on others，and many people are trying to do so on this special day.If you succeed in tricking somebody，you ______ laugh and say，“April Fool！” The person who has been tricked by you laughs too，and he will never be angry ______ you.

One April 1st，a bus was running along a country road.Then it slowed down and stopped.The driver tried ______ to start the bus，but he failed.Then he turned to the passengers with a ______ look on his face and said，“This poor bus is ______ old.There is probably something wrong with the engine(发动机)．It isn't going as ______ as before.There is only one thing we can do ______ we want to get home today.I shall count three，and on the word THREE，I want you all to lean(身体倾斜) forward suddenly as hard as you can.Only in this way，it may get the bus started again.But if you don't ______ my advice，I'm afraid there is nothing else I can do.” So all the passengers leaned back against their seats and ______ the driver's order.Then the driver began to count.“Get ready，” he said.“One！Two！Three！” All the passengers tried hard to lean forward when they heard his last word，and the bus immediately started again.“April Fool！” the driver said loudly with ______．The passengers suddenly realized it was April 1st and the bus was full of laughter.

1.A. seriously    B. once    C. never    D. usually

2.A. to    B. in    C. with    D. on

3.A. hard    B. nothing    C. hardly    D. best

4.A. happy    B. worried    C. funny    D. sad

5.A. running    B. walking    C. getting    D. taking

6.A. well    B. bad    C. great    D. better

7.A. but    B. unless    C. if    D. so

8.A. follow    B. know    C. understand    D. remember

9.A. wrote    B. heard    C. got ready for    D. planned

10.A. a smile    B. a look    C. a hurry    D. a surprise