—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
The radio says a wild animal zoo is going to ____ in our city. 
#44930
A
be built
B
built
C
build
D
be building
This kind of books _____ well and they _____ out last week.
#44810
A
sells; were sold
B
is sold; sold
C
sells; sold
D
is sold; were sold
Sixteen-year-olds         to drive.
#44679
A
is allowed
B
are not allowed
C
allowed
D
is not allowed
The children ______ not to play with the fire.
#45047
A
are often told 
B
tell 
C
are telling 
D
told