The medicine ___ as soon as you take it. But it ____ the blood.

The Nobel Prize in literature has been awarded annually to an author from any country _________ has produced “in the field of literature the most outstanding work in an ideal direction”.

One generation plants the trees undershade another generation rests.

It is much easier to talk about social change than to .

18. —- Are you free after school—- Sorry. I’ve planned to treat a friendof mine to dinner _______for his help.