大家好，请教一下
在英语论坛问了一个问题：
a. I know that everyone should follow this rule. However, I am afraid that
Tom failed to do so. But it seems that you don't want to warn him, I am
wondering if there is some reason?
b. I know that everyone should follow this rule. However, I am afraid that
Tom failed to do so. But it seems that you don't want to warn him; I am
wondering if there is some reason?
c. I know that everyone should follow this rule. However, I am afraid that
Tom failed to do so. But it seems that you don't want to warn him; I am
wondering if there is some reason.