1.【2014届浙江温州十校第一次联考】25. We _______ the difficulty together, but why didn’t you tell me?
A. should face B. might face C. could have faced D. may have faced
2.【2013届江苏扬州中学高三最后一卷】30.—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
3.【2014届辽宁五校协作体摸底试题】22. Any information one wants to know about the coming National Games in Shenyang, just call 024- 62347788. It ________ be simpler.
A. mustn’t B. won’t C. needn’t D. can’t
