After the bell rings, which indicates the ending of the exam, you stay you are until all your papers are collected.
A. shall, where
B. would, where
C. will, in which
D. can, what
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(答案→)A. shall, where
B. would, where
C. will, in which
D. can, what
解析：第一空情态动词辨析题，shall表示按法律、制度、条文“应该”；第二空考查由where连接的地点状语从句。 铃响后预示着考试时间结束你们应该呆在原位直到试卷收上来。