— How do I look white, Mike?—Well, I would choose grey. White looks bad a boy with dark skin.
We’ll play basketball ________ Class 3 tomorrow.
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 _________.