As it turned out to be the most important meeting in the year, you ____ so casually. 
#62823
A
Shouldn’t dress up
B
shouldn’t have dressed up
C
needn't have dressed up
D
couldn’t dress up
推荐题目
If you ______ smoke, please go outside.
#74443
A
can
B
should
C
must
D
may
 You __________be tired—you’ve only been working for an hour.
#62234
A
must not
B
won’t
C
can’t    
D
may not
You are tired. You _____ go to bed early.
#77293
A
can’t
B
should
C
aren’t
D
shouldn’t