—Let’s go to the concert tonight, Michael!
—Sorry, I _______. I have to help my mother with the housework
A．mustn’t B．may not
C．needn’t D．can’t
We hope that as many people as possible ________ join us for the charity show tomorrow.
A．need B．can
C．must D．should
—Excuse me, where are we going to have our class meeting?
—I’m not sure. Ask our monitor, please. He know.
A．can B．may
C．need D．shall
—______ you swim?
—Yes, but I’m not a good swimmer.
A．Can B．May
C．Need D．Must
—May I watch TV for a while？
—No, you _______. You have to finish your homework first.
A．shouldn’t B．needn’t
C．mustn’t D．won’t
—Can you play the piano?
—Yes, I _______. I often practice it on weekends.
A．needn’t B．need
C．can’t D．can
