In some parts of London, missing a bus means _______ for another hour.
| A．waiting | B．to wait | C．wait | D．to be waiting |
44. He ______ all his time and energy to his work．
| A．spent | B．cost | C．contributed | D．combined |
43. The Chinese people consider dragon as a ______ of China.
| A．sign | B．mark | C．character | D．Symbol |
42. 
______ this fact, French still has an impact on the English language.
| A．although | B．In spite | C．Despite | D．Even if |
41. This is a ______ problem, which can be seen from her ______ look.
| A．confusing, confusing | B．confused, confusing |
| C．confusing, confused | D．confused, confused |
40. It is obvious that lung diseases are____smoking.
| A．linked to | B．related with | C．resulted in | D．led to |