Joan and Mary haven't seen each other____

试题详情及答案解析

Joan and Mary haven't seen each other_____ they left school five years ago.

A．as

B．before

C．after

D．since

答案：D

试题分析：句意：琼和玛丽自从五年前离开学校互相就没见过面。since 表示 “自从……以来” 后跟时间点， for + 时间段。故选D
考点:考查动词时态的用法。