The number of traffic accidents caused by drunk driving is _______ as the number of those caused by other reasons.
| A．twice as many | B．twice as large | C．as twice large | D．many as twice |
Tom rushed out in a hurry, ______ the door ______.
| A．leaving; unlocked | B．leaving; unlocking |
| C．left; unlocked | D．to leave; unlocking |
This computer doesn’t work properly, because the operating system has.
| A．broken up | B．broken down |
| C．broken out | D．broken away |
—May I book two tickets for the football match on August 8 ?
—Sorry, sir. But we have no tickets
| A．spare | B．useful | C．available | D．suitable |
The amount of money _____ for the ten provinces in southern China suffering the snowstorm was soon collected．
| A．to need | B．needing | C．needed | D．which needed |
Come and see me whenever _______.
| A．you are convenient |
| B．you will be convenient |
| C．it is convenient to you |
| D．it will be convenient to you |