Shyness is the cause of much unhappiness for a great many people. Shy people are (1) and serf-conscious; that is, they are (2) concerned with their own appearance and actions. (3) thoughts are (4) occurring in their minds: What kind of impression am I makingIt is obvious that such (5) feelings must affect people adversely. A person’s self-concept is (6) in the way he or she behaves, and the way a person behaves affects other people’s reactions. (7) , the way people think about themselves has a profound effect on all areas of their lives.Shy people, having low (8) , are likely to be passive and easily influenced by others. They need reassurance (9) they are doing "the fight thing". Shy people are very (10) to criticism; they feel it (11) their inferiority. A shy person may (12) to a compliment with a statement like this one: "You’re just saying that to make me feel good." It is clear that, (13) self-awareness is a healthy quality, overdoing it is harmful.Can shyness be completely (14) , or at least reduced Fortunately, people can overcome shyness with determined and patient effort in building self-confidence. Since shyness goes (15) with lack of serf-esteem, it is important for people to accept their weakness as well as their strengths. For example, most people would like to be "A" students in every subject. It is not fair for them to (16) themselves inferior because they have difficulty (17) some areas. People’s expectations of themselves must be (18) Each one of us is a unique, worthwhile individual. The better we understand ourselves, the easier it becomes to (19) our full potential. Let’s not allow shyness to block our chances for a rich and (20) life. 16（）

A. in
B. within
C. with
D. at