【题目】—— What was wrong? Why didn’t you go to the picnic as scheduled?
—— I’m sorry. I _________ a seriously-injured old man to the hospital.
A. would deliver B. delivered
C. had delivered D. was delivering
在线课程【答案】D
【解析】
考查时态。句意：—出什么事了?你为什么没有按计划去野餐?—我很抱歉。我正在把一个严重受伤的老人送到医院。结合句意可知此处是表示在过去某一段时间内正在做某事，所以用过去进行时态，故选D。