He is going into hospital to have a small __________ her knee.

Readers can __quite well without knowing the exact meaning of each word.

 —Mom, I can’t see any point in working hard at all the subjects at school.—Come on, dear. Years of hard work will surely ___________ in the future of your career.

Though tigers are ______ to people, they are ______ now and we should protect them or they will die out.

Many students believe the choice of their universities should _______ their own interests.