问题
选择题
—It's the computer room! So you ____ know smoking is not allowed here.
—Oh, sorry.[ ]
A. must
B. can
C. may
D. need
答案
答案：A
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—It's the computer room! So you ____ know smoking is not allowed here.
—Oh, sorry.[ ]
A. must
B. can
C. may
D. need
答案：A