Mr Green,---------has come for a visit to CHina,arrived in Shanghai yesterday.

问题描述:

Mr Green,---------has come for a visit to CHina,arrived in Shanghai yesterday.
A:whom
B:that
C:which
D:who
and why thank you!

who.
定语从句.中间的句子成分是插入的,主句是开头的和最后一个分句.
指人不是用who就是whom,在这里这个人做的是从句的主语所以要用主格who.