找出句子中错误的一项并改正。
(   )（1）Is thisyou bag ?
           A  B  C
__________.
(   )（2）Who storybook isthis ?
A          B  C
_             .
(   )（3）Thatsoundsweet .
           A    B    C
___________.
(   )（4）Yes , itisn’t .
           A   B  C
___________.
(   )（5）Hello , boys and girl .
A     B      C
                        ___________.
(   )（6）Thatisme ruler .
            A   B C
___________.
(   )（7）Where do your come from ?
            A    B   C
___________.