You _____ pay your library fines. If not, you _____ not be allowed to graduate.
A. may; should B. should; need C. must; will D. will; can
Mr. Bush is on time for everything. How _____ it be that he was late for the opening ceremony?
A. can B. should C. may D. must
--What do you think of it?
--I think it is a thing of importance that it ____ done soon.
A. is B. is to be C. be D. to be
She is too slow. She ________ pass the test, but she __________ too little.
A. would; knew B. will; knows C. would; knows D. will; knew
He _______ Shanghai, for I saw him talking with the headmaster a moment ago.
A. must have gone to B. can’t have gone to
C. mustn’t have been to D. can’t have been to
—Why didn’t you attend the lecture yesterday?
—I didn’t think that we _______ on Sundays.
A. should B. ought to have C. shouldn’t have D. will have to
