【推荐1】Too many ________(失败) have weakened him of his confidence.(根据汉语提示单词拼写)

【推荐2】The secret to his success is learning from many of his ____________(失败). (根据汉语提示单词拼写)

【推荐3】The ________ (失败) in physics seemed to have weakened his confidence. （根据汉语提示单词拼写）

【推荐1】A __________ (锁链) is a series of metal rings which are joined together in a line and used for fastening things, supporting weights, decoration etc. （根据汉语提示单词拼写）

【推荐2】She produces legal ________ (文件，公文) for a downtown Seattle law firm. (根据汉语提示单词拼写）

【推荐3】My dear son, please accept my sincere c________ on your graduation from university. （根据首字母单词拼写）