--The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
-- my students have a try?
A. Should
B. Shall
C. Will
D. May
网友回答
A. Should
(答案→)B. Shall
C. Will
D. May
解析：此处shall用于一、三人称表示征求对方意见。句意：新的禽流感育苗的研究很富有挑战性。你认为谁能做这项工作？——让我的学生试试好吗？表示征求对方意见，用shall。