问题
选择题
New ideas sometimes have to wait for years before _____ .
A．fully accepted
B．having fully accepted
C．fully accepting
D．being fully accepted
答案
答案：D
新思想往往要到若干年后才能被完全接受．新思想是被接受的，所以要用被动形式，故Ｄ选项正确．
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