问题
选择题
_____quite common for people to believe that more and more teenagers have become addicted to on line games.
A．As is
B．That is
C．It is
D．What is
答案
答案：C
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_____quite common for people to believe that more and more teenagers have become addicted to on line games.
A．As is
B．That is
C．It is
D．What is
答案：C