________. Is this your pencil case?

— Is this your pencil box?  —Yes, ____________.

A. you are good         B. it isn’t    C. it’s not good           D. thank you 

________. Is this your pencil case?

A．Sorry             B．I’m sorry         C．Excuse me         D．Hello

1.This is your sister.(改为一般疑问句)

                your sister?

2.This is my parent.(改为复数形式)

       are my        .

3.Those are my friends.(改为单数形式)

       is my         .

4.That is a pen. (改为否定句)

                   a pen.

5.That is a pencil.(对划线部分提问)

                    that?

—Is this your pencil?

      —No, ________. It’s his pencil.

      A. it is not      B. it is          C. it isn’t          D. it’s