英语:填入句子,补全对话.

问题描述:

英语:填入句子,补全对话.
( ).I lost my pencil case.
( It's yellow.
( A pen,a pencil and a ruler.
Look!( Yes,it is.
( ).That's OK.

what's the matter?
what color is it?
what in it?
is it your pencil-case?
here you are.