______ the police thought he was the most likely one, since they had no exact proof about it, t hey could not arrest him．
| A．If only | B．As long as | C．Although | D．As soon as |
Faced with a bill for $10,000，________.
| A．an extra job has been given to John |
| B．the boss has given John an extra job |
| C．an extra job has been taken |
| D．John has taken an extra job |
________ in a white uniform, he looks more like a cook than a doctor.
| A．Dressed | B．To dress |
| C．Dressing | D．Having dressed |
________ around the Water Cube, we were then taken to see the Bird's Nest for the 2008 Olympic Games.
| A．Having shown | B．To be shown |
| C．Having been shown | D．To show |
The storm left，________ a lot of damage to this area .
| A．caused | B．to have caused |
| C．to cause | D．having caused |
Oil prices have risen by 32 percent since the start of the year，________ a record US $57.65 a barrel on April 4.
| A．have reached | B．reaching |
| C．to reach | D．to be reaching |