—How long _______it _______ you to work out such a difficult problem? —About thirty minutes. A. did… take B. does… take C. did…cost
Peter usually goes to school by______bus.
Can we ________ in the classroom?
—__________, Tony. — Sorry, Ms Wang.
Let's______ the pandas first.
—Do you play______piano in your free time, Jack? —No, I like sports. I usually play_____soccer with my friends.