It must be very ______ to watch a close game between the two basketball teams.
There’s no way of knowing why one man makes an important discovery ___ another man, also intelligent, fails.
The doctor will see you again next week. _____, you must rest as much as possible.
Of all the books on the shelf, is of any use for improving our practical skills of survival in the competitive world.
—How was your recent trip to England?—I’ve never had ______ one before.
When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.