(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
(2013·福建三明二模)—Look at the full moon. How beautiful it is!
—How I wish I ________ on it some day!
A．were B．am
C．would be D．will be
(2013·合肥一中二模)The school recommends parents ________ their children to swim in rivers or lakes during summer holidays.
A．not permit B．do not permit
C．mustn't permit D．couldn't permit
(2013·合肥第二次质检)Martin hasn't been in touch with me for ages. He ________ my new cellphone number.
A．needn't get B．mustn't get
C．can't get D．shouldn't have got
