Charles Darwin, a young man just out of university, knew perfect well that he had to depend on _____ when he set out on a voyage of discovery around the world.
He found it impossible to please his boss; ____, he quit the well-paid job.
The government is doing whatever they can to ____ the bird flu from spreading.
A good diet and some moderate exercise are ____ to good health.
The meeting went on in such a friendly ____ that everything was settled ahead of schedule.
--- I’m very sorry for shouting at you in the meeting. --- ____! What’s the big deal?