Tommy is _____ only child in thefamily, so his parents make _____ fuss of him.

This job doesn’t pay well, but it’ll _________ cover your daily expenses.

Your ability has never been in doubt– the question is ____ you are prepared to work hard

It is a paradox（自相矛盾） that ina rich country there should bemany poor people.

This is a key. It’s ___________blue key.