你已安排谁去机场接他呢?Who _ you _ _ _ meet him at the airport?=Who _ _ _ _ _ meet him at the air by you?
问题描述：
你已安排谁去机场接他呢?Who _ you _ _ _ meet him at the airport?
=Who _ _ _ _ _ meet him at the air by you?
答
Who have you arranged to meet him at the airport
答
Who 【 have 】you 【arranged for to 】 meet him at the airport?
=Who 【has been arranged for to 】meet him at the air by you?
arrange for sb to do sth .安排某人做某事
变成被动式就是:sb.be arranged for to do sth.某人被安排去做某事.