who is the man to () Rachel is talking?括号内可以填上什么词,是who,whom,which还是that

Who is the man. Who is the man Nothing is difficult to the man who will try he is the first man who/that came to china. Nothing is difficult to the man who will try Nothing is difficult to the man who willtry nothing is difticult to the man who will trykuai kuai who is the man worse to believe in? The man who promises everything is sure to fulfill nothing who is the best man 请问who is the man Who is the old man? who is that man? he is the man often(l )books to me He is the man who I spoke to yesterday.这里的who能否改成that? nothing is difficult to the man who will try中who能省略吗 Who is the man ____ spoke to your father just now 可以填who吗为什么 Happy is the man who is received The old man who is listening to the radio is my grandfather是什么意思