--- This must be a footprint of a tiger. --- It ____ be. A tiger’s should be much larger and deeper than this. 
#62711
A
mustn’t
B
won’t
C
shan’t
D
can’t
推荐题目
-May we leave the classroom now? -No, you ______. You ______ to leave until the bell rings.
#78353
A
mustn’t, are allowed
B
don’t have to, are supposed
C
needn’t, aren’t allowed
D
can’t, aren’t supposed
This bag          60 Yuan.
#76848
A
is on sale for
B
are on sale
C
are on sale for
D
is sale