One dark and stormy night，an elderly man and his wife entered the hall of a small hotel in Philadelphia，hoping to get shelter for the night．
The clerk，a friendly man with a beautiful smile，explained that there were three conferences in town．“All of our rooms are taken，”the clerk said，“but I can't send a nice couple like you into the rain at one o'clock in the morning．Would you perhaps be willing to sleep in my room? It's not a suite，but it will be good enough to make you comfortable for the night．”The couple agreed．
As the elderly man paid the bill the next morning，he told the clerk，“You are the kind of person who should be the boss of the best hotel in the United States．Maybe someday I’ll build one for you．” The clerk looked at them and smiled．The three of them had a good laugh．
Two years passed．The clerk had almost forgotten the incident when he received a letter from the elderly man，asking the clerk to pay him a visit．The elderly man met him in New York，and led him to the corner of the Fifth Avenue and 34^th Street．He then pointed to a great new building there，a reddish stone one with watchtowers thrusting (插入) up to the sky，and told the clerk that it was the hotel he had just built for him to manage．
That wonderful building was the original Waldorf-Astoria Hotel．And this young clerk whose name was George C．Boldt never foresaw the return of events that would lead him into the manager of one of the world's most attractive hotels．
Why did the elderly man build a hotel for the clerk?

A．He was grateful to the clerk．

B．They had a bet at first．

C．He wanted to please the clerk．

D．He wanted to sell the hotel．

Which of the statements about the story is NOT true?

A．The story took place at about one a．m．

B．The old couple were too poor to afford a luxurious room．

C．The clerk was willing to help those in need．

D．The clerk received an unexpected invitation from the old man．

According to the text，the clerk．

A．helped the couple because he thought they were poor．

B．hoped that the old couple could give him a large amount of money．

C．didn't expect to receive things in return from the old couple．

D．became rich，thanks to his own efforts．

Which of the following proverbs suits the story the best?

A．Every little thing helps．

B．Make hay(干草)while the sun shines．

C．Accidents will happen．

D．One good turn deserves another．