You buy a gift, but you can if you want to.
#62926
A
must
B
mustn't
C
have to
D
don't have to
推荐题目
One of our rules is that every teacher wear school uniform while attending the school flag-rising ceremony.
#63193
A
might
B
shall
C
could
D
will
Living in a fast-paced world, we get left behind if we stop learning.
#62355
A
should
B
dare
C
may
D
need
---Must I hand in my homework now?---No,you__.You can hand it in tomorrow.
#74413
A
mustn’t
B
can’t
C
needn’t
D
shouldn’t
–Look! Someone is cutting a tree on the moon.–It _______ be true, Granny. Our teacher says there is no air there.
#75239
A
can't
B
mustn't
C
may
D
should
