While Nick was on the bus reading his newspaper, the man sitting next to him suddenly pushed a large envelope（信封）into his hands. "Here, take this!" the man said, stood up and got off the bus before Nick could say a word.

    Nick sat there, holding the envelope. It felt heavy.  There was paper inside, or money perhaps. "I'd better hand it over to the police," he thought. There was a police station close to his office. But, as he got off the bus, a man came to him. He seemed to be waiting for something.   "He wants the envelope," Nick thought. Nick began to walk quickly, and the man hurried after him. Nick managed to lose the man in the crowd（人群）．When he entered the police station, the man was no longer in sight.

    Inside the police station, Nick handed over the envelope to the policeman who was on duty.  The man opened it. The envelope was full of money, false（假的）money.“Clearly the man made a mistake," the policeman said. "He thought you were one of the gang（团伙）!”

    “However," the policeman went on. "I'm afraid I must ask you to keep quiet about all this.  We are trying to catch some very clever thieves, and we don't want them to know that we have some of the money. So you mustn't say a word to anyone-not even to your boss!"

1. The man who suddenly gave Nick an envelope was most probably_______.

A. Nick's friend    B. the bus driver    C. a thief    D. a postman

2. As Nick got off the bus, a man came to him because_______.

A. he wanted to catch Nick

B. he thought Nick was a policeman

C. he wanted to give Nick some money

D. he thought Nick was one of their gang

3. By the last few sentences of the passage, we can infer that_______.

A. Nick let everyone know his wonderful story

B. Nick's boss was the last to know Nick's story

C. Nick would keep silent about what happened for some time

D. the gang already knew the police got some of the false money