--- Derek, I owe you a thank – you for all your help.
--- __________
| A．If you please. | B．Don’t mention it. |
| C．That’s it. | D．All right. |
50. John is on the bottle again. This sentence probably means _____.
| A．John is standing on a bottle now. | B．John is holding a bottle now. |
| C．John threw away a bottle. | D．John begins to drink wine again. |
51. --- Who is at the _____ of all this trouble.
--- I don’t know.
| A．base | B．bottom | C．reason | D．Cause |
52. I shall walk with you to the bottom of the road. The underlined part means ____.
| A．end | B．top | C．side | D．Base |
53. --- Please tell me how to work out this maths problem.
--- Use your ______ , then your find a way.
| A．heart | B．brains | C．hand | D．Mind |
54. Because of the year 2008 Olympic Games, the American corporation board of trustees(董事会) decided to set up a Chinese _____ in Beijing.
| A．room | B．group | C．counterpart | D．Branch |