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
—Can I go to the park, Mum?—Certainly. But you ______ be back by six o’clock.
#76284
A
can
B
may
C
might
D
must
—People find it hard to get across the river．—I think at least two bridges over it．
#77307
A
need
B
are needing
C
will need
D
should be needed
—Dad，can I go to the movies tonight?--Sure，but you__come back home before 9 o’clock.
#76861
A
can
B
must
C
may
D
might