______air is essential to man, so is water to fish.
Stephanie: "Oh, no! I left my book at home. Can I share yours?" Scott: "______ "
As a millionaire who liked to show off her wealth, Mrs. Smith paid______________________________________________ we asked.
Education in many countries is compulsory________the age of 16.
He_______________us but he was short of money at the time.
Supporters of free-market globalization point out that_____________________ .
She asked me______I was looking at.
_______ has been a topic of continual geological research.
The word "allocated" in the passage mostly means "______".
The phrase "keeps sellers on their toes" in the passage mostly means "______".
Only one of our gifted students______to participate in the final competition.