题目内容
-Now most teenagers write to each other not by letter ________online.
--Yes, the Internet has become a part of their life.
A. or B. and C. but D. so
C
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题目内容
-Now most teenagers write to each other not by letter ________online.
--Yes, the Internet has become a part of their life.
A. or B. and C. but D. so
C