- when can l see the doctor madam - let me see sorry you --
- when can l see the doctor madam - let me see sorry you -- your turn so you'll have to wait again a are missing b have missed c will miss d missed 请您说明理由好吗?
当出现since加一段时间加ago,over the last few days/years/months,since加某一点时间等等时间状语使用现在完成时,当已经发生的动作或事情对现在产生了影响,也用现在完成式,这里符合第二种,在等一次是结果,是错过了机会产生的影响,所以选B,题目中交代了才能用哦!