Being a parent is not always easy,and being the parent of a child with special needs carries wi35.Being a parent is not always easy,and being the parent of a child with special needs carries with ____extra stress.A.it B.them C.one D.him如何断句?

Being a parent is not always easy,and being the parent of a child with special needs carries wi35.Being a parent is not always easy,and being the parent of a child with special needs carries with ____extra stress.A.it B.them C.one D.him如何断句?
Being a parent is not always easy,and being the parent of a child with special needs carries wi
35.Being a parent is not always easy,and being the parent of a child with special needs carries with ____extra stress.
A.it B.them C.one D.him
如何断句?怎么翻译呢?
it 为什么指代Being a parent is not always easy呢?

Being a parent is not always easy,and being the parent of a child with special needs carries wi35.Being a parent is not always easy,and being the parent of a child with special needs carries with ____extra stress.A.it B.them C.one D.him如何断句?
Being a parent is not always easy,只是一个完整的小句
being the parent of a child with special needs 这是整个的后面句子的主语
carries with 是谓语
it 是形式主语 代指第一个小句
extra stress 是最后一部分
翻译：做一个父亲（或母亲）不总是很简单的.做一个有特殊需要的孩子的父亲或母亲给我们带来了更大的压力.

作为孩子的家长并不是件容易的事，作为一个有特殊需要的孩子的家长则会有更多的压力。
句子应该这样理解才对： it 应该指代的事 being a parent of a child with special needs
extra stress 应该理解为 carries的宾语补足语。