题目内容
About two years ________ since the earthquake took place in Wenchuan.
A.passed | B. has passed | C.have passed | D.has been passed |
B
试题分析:句意:自从汶川地震发生,已经大约两年过去了。since自从,引导的时间状语从句为一般过去时,主句为现在完成时,two years做为一个整体,视为单数,故选B.
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