He to school by bike, but now he to school on foot.A.used to going; gets used to go B.used to go; gets used to goC.used to go; gets used to going
Do you know _________ an “o” and _________ “u” in the word “computer”?
The Yangzhi River is one of __________ in the world.
—How can we protect ourselves ________ the earthquake?—We should stay calm first.
Da Shan is _________ at Chinese. He can speak Chinese very _________.
—My mother has been ill for several days.—____________