It is a key.( )this is my pen.( )black.括号里填什么啊

This is( ) pen,and it is black.括号里面填什么? It ( ) a black pen.括号里填be动词 the pen is black it´s a black pen my.jacket is this is( )my pen.it's( )pen.( )里填空 1.This is a n__ jacket. 2.Gina's pen is black.My pen is blac 括号内填什么This is my new watch .It was a present()my wife. This is（）my answer 括号里该填什么? Look This is a pen and it's red .The ruler is yellow.The key What is this?It is A key B pen C map D quilt Hellow,Mary.（ ）is my new friend ,Helen.括号里填什么?A.that B.this whose watch is this?is it a black -------.填什么?为什么? this is a my pen