Mark Twain is Mary's favorite author.改为一般疑问句______ Mary's favorite author?应该填whose吗

Mark Twain is Mary's favorite author.改为一般疑问句______ Mary's favorite author?应该填whose吗
Mark Twain is Mary's favorite author.改为一般疑问句
______ Mary's favorite author?
应该填whose吗

Mark Twain is Mary's favorite author.改为一般疑问句______ Mary's favorite author?应该填whose吗
一般疑问句为 Is Mark Twain Mary's favorite author?
如果是对Mark Twain进行划线提问就是Who is Mary's favorite author?

不是 要用 who‘s

不是一般疑问句，而是就划线MARK TWAIN 提问的特殊疑问句：(Who 's ) Mary's favorite author？
一般疑问句是Is Mark Twain Mary's favorite author ?

Who is

Is Mark Twain Mary's faxorite author?