Question

【题目】–When _______ you _______ your homework?

--I had finished it before he _______ back

A. have; finished; came B. have; finished; was coming

C. did; finish; came D. did; finish; was coming

Answer 1

【答案】C

【解析】

句意“-你什么时候完成你的作业的？-在他回来之前，我完成了作业”。第一空处，when不与完成时连用，且完成作业是过去完成的，用一般过去时，排除A和B。第二空处，根据had finished可知，空处用一般过去时，故选C。