Question

【题目】Nancy _ lots of work for the school union since she went to university.

A. didB. will doC. has doneD. had done

Answer 1

【答案】C

【解析】

句意：自从南希上了大学，她已经为学校联盟做了很多工作。

本题考查时态。did是一般过去时，will do是一般将来时；has done是现在完成时，had done是过去完成时。根据时间状语从句since she went to university，主句用现在完成时，故选C。