I want to ______ what my teacher just said.
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 _________.