---I can’t find my pen.

---___ you put it in your book.

--- Is this your book?           ---                  .

A. Yes, this is         B. Yes, it is       C. Yes, she is

---I can’t find my pen.
---___ you put it in your book.

---________,is this your book?

        A. Sorry           B.Excuse me     C. Thank you

 _______ my book , _______ your book.

A.  This’s; it’s                  B. this is;  these’re

C.  That’s ;  this’s              D.This is;  that’s