题目内容：

It was the year 1867. Mark Twain was out of money. He walked in the streets, trying to find a way to make some money. At last he    a hotel and sat down in the lobby. There came a lovely dog. Mark Twain put the dog in his lap.

At this time an Army General came along and he loved the dog. He said to Mark Twain, “He is a     . Would you sell him?”

Thinking of his    stomach, Mark Twain thought it seemed to be a good thing and said, “Yes.”

The General asked, “What do you ask for him?”

“Three dollars.”

The General was    and said, “Only three dollars! Are you serious?”

“Three dollars.”

“Very well, since you just want it,” said the General. He gave Mark Twain the   , led the dog away and disappeared upstairs.

In about ten minutes a middle-aged gentleman came along and began to    . Mark Twain asked if he was looking for a dog.

The man’s face had been sad and   , but now it became bright and he answered, “Yes. Have you seen him?”

“Yes. He was here a minute ago, and I saw him follow a gentleman    . I think I can find him for you, if you would like me to     .”

The gentleman said he would pay for the trouble. He asked how much Mark Twain would    .

“Three dollars.”

“Dear me, it is nothing. I will     .”

“No. Three is the    .”

Mark Twain got the General’s room number from the clerk. The door was       and Mark Twain asked the General to give back the dog.

“Why?” asked the General.

“The dog’s owner wants it back.”

“Are you not the owner?”

“No, I am not.”

The General began to shout, but he was too tired to     with Mark Twain. Finally, Mark Twain paid back the three dollars, and led the dog downstairs. He      the dog to the owner and got three dollars for the job.

1.A. stopped   B. entered      C. built

2.A. neighbor  B. wonder      C. doctor

3.A. empty    B. large       C. comfortable

4.A. angry     B. patient     C. surprised

5.A. money    B. answer      C. freedom

6.A. look after B. look around  C. find out

7.A. relaxed   B. disappointingC. troubled

8.A. downstairsB. upstairs     C. everywhere

9.A. follow    B. finish       C. try

10.A. ask over  B. ask about     C. ask for

11.A. pay more  B. pay up       C. pay off

12.A. price     B. answer      C. question

13.A. opened   B. shut        C. broken

14.A. discuss   B. argue       C. discover

15.A. returned  B. sold        C. brought