问题
单项选择题
—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. Shall
B. Must
C. Will
D. May
答案
参考答案：A
解析：
本题考查情态动词，shall在主语是第二、三人称时，作为征求意见的用法。故选A。