单选题：——Shelooksveryhappy.Shehavepassedtheexam.——Iguessso.It’..

—Can I pay the bill by check?--- Sorry, sir. But it is the management rules of our hotel that payment ____ be made in cash.A．shallB．mustn’t C．can’tD．will

You’d better take another flight to New York , for the AA 505 Flight ______ have been cancelled. But you should call the airport to make sure. A．mustB．mightC．wouldD．should

— Don't you think we should ask Daniel what happened when we were away?— Maybe, but _____ he has been so rude to us, I feel like _____ him or he won't respect us.A. even though; to punish B. even if; punishing C. now that; punishing D. so that;

Alex changed his mind at the last minute，otherwise we ________ an agreement.A．should have reachedB．could have reachedC．can reachD．should reach

My mother got up early this morning _____I could catch the early bus.A. so as to B. in order to C. in order that D. as if