问题
选择题
New ideas sometimes have to wait for years before ________.
A．being fully accepted
B．fully accepted
C．fully accepting
D．fully being accepting
答案
答案：A
B有较大干扰性。before为介词，而并非连词，因此后面用动名词，ideas与accept有逻辑上被动关系，因此本空用动名词被动语态。