Question

英语：用适当的代词填入下面的空白处

Answer 1

A:where pen is that? Is it ( yours )?

B:Let( me )see.Oh,no,it's not( mine). ( mine) is black and the ( one )is blue.

A:( Whose pen is it )?

B:I think it' Bob's

A:Bob,IS this blue pen ( yours )?

C:Oh ,yes,it'( mine )