he met with the difficulty did he realize the importance of our help.
A. Even though
B. Only before
C. Never until
D. Ever since
网友回答
A. Even though
B. Only before
(答案→)C. Never until
D. Ever since
解析：短语辨析。 A．虽然；即使 B．只有在 C．相当于not...until直到……才D．从那时到现在。句意：直到他遇到困难他才意识的我们的帮助的重要性。选C。