问题
选择题
It is a set rule that students _____ remain seated until all the papers have been collected. [ ]
A. can
B. will
C. shall
D. may
答案
答案：C
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It is a set rule that students _____ remain seated until all the papers have been collected. [ ]
A. can
B. will
C. shall
D. may
答案：C
