【填句补文】The author says that interpersonal relations should be taught as a required course in every school, along with reading, writing, and mathematics. ________. That is at least as important as how much we know.
A
Much of what has been said about strangers also applies to relationships with family members and friends.
B
He keeps looking over the other person's shoulder, as if hoping to find someone more interesting in another part of the room.
C
Every time you meet someone in a social situation, give him your undivided attention for four minutes.
D
In his opinion, success in life depends mainly on how we get along with other people.
