Listen! The bird    in the tree.
#40584
A
sing
B
singing
C
is singing
D
is sing.
推荐题目
If your homework    _   , your can watch TV.
#39805
A
will be done
B
does
C
is done
D
has done
People ____ any flowers until May.
#42555
A
will see
B
don’t see
C
won’t see
D
see
There ________ a sports meeting next week.
#42439
A
has
B
is going to be
C
is going to have
D
will have