(2013·青岛二模)John ________ yet, or he would have telephoned me.
A．mustn't have arrived B．shouldn't have arrived
C．needn't have arrived D．can't have arrived
(2013·安徽安庆二模)—She looks very happy. She ________ have passed the exam.
—I guess so. It's not difficult after all.
A．should B．must
C．could D．might
(2013·浙江金华二模)A survey has shown that 40% of those killed in traffic accidents ________ if they had been wearing seat belts.
A．should have been saved
B．must have been saved
C．need have been saved
D．could have been saved
(2013·长沙二模)—The research on the new flu virus vaccine is challenging and demanding.Who do you think can do the job?
—________ my students have a try?
A．May B．Must
C．Will D．Shall
(2013·辽宁五校二模)—Mum, can I watch the TV program for another twenty minutes?
—Sorry, dear, it's time you ________ to bed.
A．went B．go
C．will go D．must go
(2013·四川省南充市二模) ________ him not to do so, he wouldn't have made such a serious mistake.
A．If I persuaded B．Did I persuade
C．Had I persuaded D．If I should persuade
