–It has been thirty years since I  &am Wap版

试题详情及答案解析

–It has been thirty years since I my hometown.
—How time flies! Great changes in our hometown in the last thirty years.

A．leave, take place

B．left, have been taken place

C．left, have taken place

D．have left, took place

答案：C

试题分析：句意：--我离开家乡已经三十年了。--时间飞逝！在过去的三十年里家乡已经发生了巨大的变化。since完成时的标志，引导时间状语从句．主句是现在完成时，从句用过去时。happen 与 take place “发生”，通常都没有被动语态。根据题意可知选C。
考点：考查现在完成时。