That tall man is Mr Smith.（对划线部分提问）Mr Smith
问题描述：
That tall man is Mr Smith.（对划线部分提问）Mr Smith
答
who is that tall man
答
我记得是who is that tall man？
难道是那个what is that tall man？ 抱歉了 不确定
答
Who is that tall man ？
答
who is that tall man?
答
Who is that tall man