问题
To help a friend solve the problem troubling him,.
A:a friend should be made known of his difficult situation
B:a man should be equipped with the kind of knowledge required
C:nothing is better than offering of knowledge required
D:keeping one’s promises is most important
B:a man should be equipped with the kind of knowledge required
C:nothing is better than offering of knowledge required
D:keeping one’s promises is most important
正确答案是：
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