Without the air to hold some of the sun’s heat, the earth at night ____ for us to live.
Mr. Black ________ English in a middle school ever since he came to China.
The prices are fast these days. Nobody can get the prices _______. A. going down ; to bring down B. rising ; to be bringing down C, raising ; bring down D. going up ; brought down
__________ with Taiyuan, Xinzhou is a small young __________ city.
We've made our plans, and now we must put them into __________. A. fact B. reality C, practice D. deed
— You look tired. Shall we stop to have a break? —__________ I can hardly walk farther.