We _______  pay to get into the concert. It's free.
#52612
A
can't
B
mustn't
C
might not
D
don't have to
推荐题目
When do you ______ Beijing .  
#62397
A
leave for
B
ask for
C
look for
D
thank for
There     many people in Paris       vacation every year.
#59708
A
have ,on.
B
are,at
C
are ,on
D
have,for.