问题
选择题
— Oh my god! You ______ wear slippers to attend the conference.
— I'm sorry I forgot there is a conference. [ ]
A. must
B. can
C. should
D. shall
答案
答案：C
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— Oh my god! You ______ wear slippers to attend the conference.
— I'm sorry I forgot there is a conference. [ ]
A. must
B. can
C. should
D. shall
答案：C