连词成句
(1)you ,to ,Beijing ,going ,this ,are ,to ,October ,go ?
__________________________________________________?
(2)about ,hours ,space ,he ,spent ,in ,twenty-one .
____________________________________________________.
(3)the, stairs, down, the, falling, apples, are.
____________________________________________________.
(4)really , it  ,is ,dog ,a  ?
_____________________________________________________?
(5)out, window ,am ,of ,I ,looking , the .
_____________________________________________________.