54. We should always keep ______ well-informed of the changing information.

53. If you want to change for a double room you’ll have to pay ___$15.

52. －Why don’t we take a little break?                        
　　－Didn’t we just have _______?

 
51. After everyone took_______ place, the meeting began.

50. When they met, they stopped and said hello to_______.

   
49. I don’t know whether small oranges are sweeter than big ______.

48. They were all tired, but _____ of them would stop to take a rest.

47. Although he 's wealthy，he spends_____________ on clothes.

    
46 Our manager allowed _______to take a holiday next week.

45. The teacher gave the books to all the students except _______who had already taken them.