His sister is outgoing.(对划线部分提问)

划线部分是什么呢?您没有标出来!

如果划线部分是His: Whose sister is outgoing?
如果划线部分是His sister: Who is outgoing?
如果划线部分是outgoing: What is his sister like?

注:outgoing adj.外向的,乐于交友的

(说明:I am just a middle school student.
能力有限,答案仅供参考.如有不对之处,欢迎指正!QQ601991129)

Your sister is to do what the outgoing work ？
Why did you leave the outgoing sister？

划线部分???