A：Excuse（me）,is（this）your pencil?
B：Yes,it is
A：（Here）you are.
B：（Where）is your pencil case
A：it is （on）the desk.it is（next）to（the）dictionary.（It's）new
B：oh,（it's）very nice
A：can i （have） a look at your pencil Case?
B：Yes,of course
A：thanks
OK