Three men came to London 　1　 a holiday. They came to a large hotel and took a room there. 2　 room was 　3　 the fifteeth floor.

　　In the evening the three men went to a cinema and came 　4　 very late.

　　“I’m sorry,” said the assistant of the hotel, “Our lifts (電梯) are not 　5　 tonight. If you 6　 want to walk up to your room. We shall make up a bed for you 　7　 the hall.”

　　“No, no,” Tom, one of the three 　8　 , said, “No, thank you We do not want to sleep in the hall. We shall walk up to our room.”

　　Then he turned to his 　9　 friends and said, “It is not easy to walk up to the fiftieth floor, but I know how to make it 　10　 . On our 　11　 to the room. I shall tell you some jokes (笑話), then you, Andy, sing us some songs, then you, Peter, 　12　 us some interesting 　13　 .”

　　“All right, that’s a good idea.” the friends both agreed.

They began to walk up to their room Tom told many jokes. Andy 　14　 some songs. 　15　 they came to the thirty eighth floor. They were tired and wanted to have a rest.　　

“Well,” said Tom. “Now it’s 　16　 turn, Peter. After all those jokes we 　17　 and songs we listened to. Tell us a long and interesting story with a sad ending.”

　　“All right,” said Peter, “I shall tell you a story. It is not long, 　18　 it is 　19　 sad: We 　20　 the key to our room in the hall.”

--Would you mind opening the window? It's too hot in the room.

         -- ______. I’ll do it right away.

         A. You ' d better not                    B. Of course not

         C. I hope not                          D. It doesn't matter

As I go out of the room, I don't want to ________ the room again．

1. A.
   return
2. B.
   return back
3. C.
   return to
4. D.
   return back to