Keep in mind: your efforts will ______.Don’t let one or two failures over the year get you down.       

A  take off           B. put off           C. pay back             D. pay off

审计抽样是指注册会计师对某类交易或账户余额中低于百分之百的项目实施审计程序，使所有（）都有被选取的机会。