the noun is unique.
____ correct answer is...
the adjective before the noun defines it.
the noun is defined by a phrase or clause that follows.
My dad is ____ teacher.
the noun has been mentioned before.
I saw a car, ____ car was red.
the noun is one of many.
____NY is the city that never sleeps.
____ dog is a domestic animal.
____ idea of these questions.
____dogs are domestic animals.
there is a superlative.
the noun is a singular proper name.
____World, ____moon, ____universe.
____ bread is delicious.
the noun hasn't been mentioned before.
____ apple a day, keeps the doctor away.
a plural or uncountable noun is used to make a generalisation.
____ Google is the most famous browser.
English is ____ best subject.
the noun is singular.