After the boy disappeared, the anxious relatives and friends spent months trying to __________ what had happened.
| A．look out | B．figure out |
| C．give out | D．rule out |
This is the _____ piano on which the composer created some of his greatest works.
| A．actual | B．genuine | C．real | D．original |
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 |