A smile costs ______, but gives much.

I would like to buy a present ________ my cousin andI must give it ________ her myself.

are advised not to drive afterdrinking, but __ seems not to help a lot

It is strongly suggested that measures________factories to pour waste into rivers by the government.[ ]

What’s the matter with John? He has been sitting there for hours.—A postcard from his father _____ an attack of home-sickness in him.