All of us find ________ necessary to take exercise every day.

It is a common practice in the USA that one needs to make a(n) ___ before seeing a doctor.

Are you good _____ teaching kids? We need a weekend teacher. [ ]

What’s wrong with you, Eric? You look tired.—I ________ to prepare for the final exam last night.

Many young people become interested in playing ______ football because of the World Cup.