If you         smoke, please go outside.
#62183
A
can
B
should
C
must
D
may
(2013·湖南长沙四校二模)—Is the letter from your mother?—Yes.But she ________the letter herself,because she doesn’t even know one word.
#62192
A
needn’t have written 
B
can’t have written
C
might not have written
D
should not have written
Mark was afraid of being scolded,so he________say what he thought to his parents.
#62202
A
dare not to
B
doesn't dare to
C
dared not to
D
didn't dare to
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