It is thought that one billion people I the world, _ is half the word’s workers, earn their living by farming.
| A．if | B．that | C．which | D．what |
. I just managed to _____ a quick breath before I was sucked under the water by the passing boat.
| A．snatch | B．scratch | C．scrape | D．scan |
John says that his present job does not provide him with enough _____ for his organizing ability.
| A．scope | B．space | C．capacity | D．range |
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 _____ in 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 |