问题
选择题
30. He _____ his potential had it not been for his desire to meet new challenges.
A．would never have realized
B．would never realize
C．never realized
D．had never realized
答案
答案：A
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30. He _____ his potential had it not been for his desire to meet new challenges.
A．would never have realized
B．would never realize
C．never realized
D．had never realized
答案：A