请问Do you know the girl who he often talks to 这句话对吗?其实这道题我已经提问过了,但答案有的说who改为whom,有的说对.您怎么看?

请问Do you konw who is the man还是Do you know who the man is Do you know the way? do you know the mean do you know the time lunchDo you know the time_____lunch? Do you know the to the question? 请问Do you know many people here? Do you know the girl i__red? Do you know the girl ___ red what do you know about the Do you know the girl over Do you know the girl for yellow? Do you know the pizza girl? Do you know () the rain come from? Do you know the girl（ ） glasses The game came over do you know Do you know the boy ()(name) David Do you know what c___ the fire Do you know the question n___ three?