coming, comes, come; which, that, what
Out of it _______ two of the most important qualities______ this book will go in search of: humanity and warmth.
【正确答案】：come; that
【题目解析】：Out of it表方位的副词置于句首要用倒装句，谓语动词在前名词性的主语在后，句子的主语是two of the most important qualities是复数用come。后面的分句是定语分句修饰qualities，但先行词前有形容词的最高级the most important,当先行词前有形容词最高级修饰时只能用that引导后面的关系分句，不能用which。