You’ll never guess who I met today — my old teacher! We _____ for 20 years.
184. In no time the locusts came down and started eating everything --- the wheat, the corn, the grass and even the _____ on the tree.
183. Hearing the funny speech given by the famous professor, all of us burst into _____.
182. To the sea captain’s surprise, he found thattravel could also be quite pleasant.
181. In the hospital, there are a lot of _____.
180. There is a _____ of understanding between them. Otherwise, they will be good friends.