选词填空 请将下列词汇填入空格中,注意根据句子的语法对词汇进行变化 stump crumble disclosure tactic conversion It’s a well-tried ______ to play down his parents’ expectations in advance of any major exam. He often feels _________ as to how to erase his pain of his past. He is a person of will who refuses to _______ under pressure. Any ___________ of knowledge into ability has much to do with practice. There are some people who enjoy making a __________ of others’ privacy.