He added that they（ ）day and night for nearly a week to get the
分类: 英语语法(00831)发布时间: 2024-08-22 09:31浏览量: 6
He added that they（ ）day and night for nearly a week to get the car going again. A、had been working B、have worked C、have been working D、worked 【正确答案】：A 【题目解析】：由句意可知时间发生在过去的过去，所以用若去完成时态，但又由于后有for nearly a week时间段，所以可知在一段时间内的持续性动作。所以用had been working