Li Lei knows two foreign languages. He can speak _______ English______ French.
#76947
A
either…or
B
neither…nor
C
both…and
D
so…that
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----May we leave the classroom now?----No, you         . You           to leave until the bell rings.
#75525
A
mustn’t; are allowed
B
can’t; aren’t allowed
C
don’t have to; are allowed
D
needn’t; aren’t allowed
She ________ when she received her medical report.
#63609
A
could help but to cry
B
couldn’t help but crying
C
couldn’t help crying
D
couldn’t help to cry
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
It's the library! So you_______ make any noise here.
#74892
A
mustn't
B
won't
C
need
D
may