问题补充：
He prepared well for the job interview,for he could sick ＿ the good opportunity A.to lose B.loHe prepared well for the job interview,for he could sick ＿ the good opportunityA.to loseB.losingC.to b
答案：
这里应该是题目出错了,原题是risk而不是sick,sick没有题目要求的这层意思.
所以是risk doing sth,选B
