问题补充:
--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
答案:
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。