how在几个从句中是关系副词,即起连词的作用引导宾语从句,又起副词的作用在从句中作状语(或修饰形容词).具体到每个从句：
how they think:how作状语,how = in what way.think在这里是不及物动词,没有宾语.
how they build relationships:how作状语
how altruistic they are:how修饰形容词altruistic,how altruistic是表语.are是系动词,没有宾语.
how much of an expert they need to be:how修饰much,how much of an expert是表语.be是系动词,没有宾语.
how prepared they need to feel:how修饰prepared,how prepared是表语.feel是系动词,没有宾语.
可见没有how作宾语的情况.