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

题目

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

答案

It is a key.( And ) this is my pen.( It's ) black.
意思：
它是一把钥匙,而这是我的钢笔,它是黑色的.
第二个括号内也可以填：They're （意思变成：……它们是黑色的.）