The passage mainly discusses______.
A. the questions in the minds of shy people
B. the urgent need to overcome shyness
C. the cause of much unhappiness for many people
D. the effects of shyness and the way to overcome it
【C12】
A. maintained
B. sustained
C. preserved
D. held
【C13】
A. optional
B. potential
C. promising
D. alternative
【C6】
A. when
B. who
C. where
D. which
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