-To keep safe, everyone_______ wear a seat belt(安全带) in a car.A. is suppose B. are supposed to C. is supposed to D are supposed
--- Excuse me, may I come in? --- Not yet. Please wait on your chair _____ your name is called.
Neither the headmaster nor the teachers _____ take a vacation next week.
--- Could you please tell me _____? --- About twenty minutes ago.
The photo _____ taken by my brother last week is very nice.
We have to finish the work now, _____?