The air_______ of Shenzhen in February ranked the 10th among 74major cities in China. A. quarter B. quality C. quantity
I’m going to be ______ engineer.
Mary is going to practice _______ basketball every day.
---What is he going to ________ when he _______ up? --- He’s going to be a doctor.
Sam and Eric are in Class One. ______are good friends.
I like ______but my favourite sport is ______.