The river, ____ are covered with trees, is very long.
| A．which banks | B．of which banks |
| C．whose the banks | D．the banks of which |
— Could you meet me at the airport?
— I'd like to，but I'm a fraid I ______ a very important meeting when you return.
| A．am attending | B．was attending |
| C．will be attending | D．will have attended |
We all consider ______ significant that we should cancel the order immediately.
| A．how | B．which | C．this | D．it |
______, everyone present was amused by his adventure story in Africa.
| A．Absurd as might it sound |
| B．As it might sound absurd |
| C．As absurd it might sound |
| D．Absurd as it might sound |
In yesterday’s business training course the consultant instructed us that a good salesman must be ______ if he wants to succeed.
| A．aggressive | B．conventional |
| C．visual | D．fragrant |
— What a terrible collision accident!
— Judging from the scene, personally, it is one or two car drivers, rather than the truck driver, who ______.
| A．is to blame | B．are blamed |
| C．are to blame | D．is blamed |