Being that he was a good swimmer, John managed to rescue the child .
The phrase "keeps sellers on their toes" in the passage mostly means "______".
In spite of her abilities, Laura has been_____________________ overlooked for promotion.
We must push the piano to the corner of the hall to_____________________ our party tonight.
Only one of our gifted students______to participate in the final competition.
_______ has been a topic of continual geological research.
__________ John Kennedy was elected president, he was the youngest American President ever.
Education in many countries is compulsory________the age of 16.
The pool should not be made so deep______small children can be safe there.
Regular exercise and good diet will bring______fitness and health.
The examination was not very difficult, but it was_____________________ long.