分类：教育/科学-外语学习
问题：英语疑难题求解Beingaparentisnotalwaysea 
Being a parent is not always easy, and being the parent of a child wh special needs often carries with ____ extra stress.A. it       B. them      C.one      D.him选A, 答案解释说it 代第一个句子。不明白，高手帮帮忙 
回答：选 A. it. 因为 it 指的是the parent of a child. parent 是 single form 不是 plural (多过一个人)。