Question

【题目】When the parents arrived at the hall, the students _______ their projects.

A. have finish B. had finished

C. finished D. are finishing

Answer 1

【答案】B

【解析】

试题分析：句意：当父母们到达大厅的时候，学生们已经完成了他们的项目。根据句意及题干分析此空发生在父母们到达之前，是“过去的过去”，所以要用过去完成时态，故选B。