Children __________swim in the river without adults(成年人).
A. can’t B. must C. have to D. needn’t
We must wear __________shoes for gym class today.
A. sports B. a sport C. sporting D. to sport
________you_________ do your homework this evening?
A. Are, have to B. Do, have to C. Must, have to D. Do, must
You_________ cross the street when the traffic lights are red.
A. can’t B. must C. need to D. have to
—Don’t be late for school, again. You _________ be on time.
—Sorry, Mr. Liu. I won’t next time.
A. can B. must C. shouldn’t D. needn’t
1.请不要在教室里跑。
________ _________in the classroom, ___________.
2.我们不可以在这里说话。
We________ ________ here.
3.她必须每天早到学校开门。
She ________ to ________ ________school early and open the door.
4.他必须在音乐室听音乐吗?
Does he________ ________listen ________music in the music room?
5.他不必每天在7:00去上班。
He________ ________to go to work at 7:00 every day.
