—May we leave classroom now?—No, you        . You        to leave until the bell rings.
#44886
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed
推荐题目
Put away your school things.Your stationery must       carefully.
#44775
A
be taken good care
B
be taken good care of
C
take good care
D
take good care of
The murderer ________ only days after the young man was found ________. 
#44510
A
caught; died
B
was caught; died
C
caught; dead
D
was caught; dead