问个英语问题：That man is not to be admitted.和That man is not admit

问个英语问题：That man is not to be admitted.和That man is not admit 1 That man is not __________ to be a doctor. 1.That man is not __________ to be a doctor. That man is not __________ to be a doctor. he is not the man _he used to be 空里填what和that都可以吗? The man is not to be admitted.这句话为什么要有to? He is not the man ------he used to be.A whom B who C that D he is not the man _he used to be A that B who Cwhich Dwhom It is said that that "that" that that man said is not that " A man is fed,not that he may be fed,but that he may work. I’ve learned that it is not that a man gives life to a child he is not the man---- he used to be 肯定能填that 为什么不能填 as'呢?