Studies of friendship seem to implicate more complex factors. For example, one function fr
The difficulty of linking friendship【C15】______ similarity of personality probably【C16】______ the complexity of our personalities; we have many【C17】______ and therefore require a disparate group of friends to support us. This of course can explain why we may have two close friends who have little in【C18】______, and indeed dislike each other. By【C19】______ large, though, it looks as though we would do well to choose friends who【C20】______ us.
【C1】
A.that
B.which
C.what
D.if