I've decided to keep all these stamps as they might be ________ some day.(2012·天津联考)
169. ____________! It's time to go to school.
168. In the past, the poor people often _____ hungry. So many of them died ___ hunger.
167. At this very moment, I _____ you had a very pleasant marriage.
166. I think your bookshelf is too high. I can’t reach a book on top even when I _____ my hand.
165. Mr. Black the nail with a hammer on the wall and hung a family photo on it.