选择题：he is extremely shy and withdrawn, though it may be that _______.

english surnames can show various sorts of information about people, including the places a person is from, the job he has, family relationships, ethnic identity and personal ________.

in britain, if you do not look at the person in a conversation, it could imply a number of things, including fear, ______, uneasiness, guilt or indifference.

communication through writing emancipates man from the constraints imposed by the face－to－face _______ and the spontaneity of time.

according to sir richard paget, the right order of development of human communication is __________.

different cultures have different ________ concerning how far apart people should stand when communicating with each other.