—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. Shall
D. Will
网友回答
A. May
B. Must
(答案→)C. Shall
D. Will
解析：句意：——研究新的流感病毒疫苗是挑战也是迫切需要的。你认为谁能来做这项工作呢？ ——让我的学生试一试，好吗? 情态动词shall用于主语是第二、三人称时，表示征求对方的意见。