Birds of a feather flock together. 物以类聚，人以群分。
A man is known by his friends. 什么人交什么朋友。
Keep good men company and you shall be of the number. 近朱者赤，近墨者黑。
A friend in need is a friend indeed. 患难见真情。
A friend is easier lost than found. 得朋友难，失朋友易。
A faithful friend is hard to find. 知音难觅。
A friend is never known till a man has need. 需要之时方知友。
Misfortune tests the sincerity of friends. 患难见真情。
大家要认真记哦!不能偷懒!