what's this ˉ is a pen .2.tom is an american boy ˉis my friend .i like根据上下文填空

问题描述:

what's this ˉ is a pen .2.tom is an american boy ˉis my friend .i like
根据上下文填空

It is a pen.
He is my friend. I like him.

第一空应该填It
第二个空应该填He

what's this? It is a pen.
tom is an american boy. he is my friend.i like him

It,He
都是人称代词.