The computer programs are a puzzle to me. The more I think of them, the more questions I think of .
170. The girl has fallen off her bicycle, and her knees _________.
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.