Tom took a taxi to the airport, only _____ his plane high up in the sky.
| A．finding | B．to find | C．being found | D．to have found |
I don't think the charge for overhauling （大修）the equipment is excessive in _____ to its size.
| A．correspondence | B．equation | C．proportion | D．dimension |
The meeting was _____ when the chairman fell ill.
| A．put down | B．shut out | C．cut short | D．taken off |
The members of the club wouldn't run a ____ entrusting（委托） the organization to an unreliable person.
| A．danger | B．risk | C．hazard | D．chance |
Many new _____ will be opened up in the future for those with a university education.
| A．opportunities | B．realities | C．necessities | D．probabilities |
It isn't quite _____ that he will be present at the meeting.
| A．sure | B．right | C．exact | D．certain |