句型转换（共10个空，计10分）
They are their pencil cases.（改一般疑问句）
_________    __________their pencil cases?
The jacket in red is $5. （对划线部分提问）
_________    __________is thejacket in red?
I am a student.（改复数句）
_________ _are_________.
Mary does her homework after school everyday.(改否定句）
Mary_________  _________ her homework after school everyday.
Is your school day in November?（否定回答）
_________, it_        .