twice, the postman refused to deliver our letters unless we chained our dog. (2009 .北京)
276. We should take good care of our ____. Don’t forget to rinse your mouth after meals.
275. A telephone is an instrument by which we can speak to people far away. The underlined word means ____.
274. Believe it or not, two ____ is worth an egg.
273. Which of the following is not a container?
272. When the police searched the village, they caught the two ____ that had stolen something from the shop.