Question

【题目】—We haven’t seen each other for a long time.

—Yes. It has been two years_____we met last time.

A.beforeB.afterC.forD.since

Answer 1

【答案】D

【解析】

句意：——我们很久没见面了。——对。自从我们上次见面已经两年了。

A. before在……之前；B. after在……之后；C. for为了；D. since自从。这里是since引导时间状语从句，主句是现在完成时，从句用一般过去式。根据题意，故选D。