问题补充：
the thunderstorm ,they the injured man in time. They felt sorry for that.
A. Had it not been for ; could reach
B. If there was not; might have reached
C. But for; might reach
D. If there hadn’t been ; could have reached
答案：
A. Had it not been for ; could reach
B. If there was not; might have reached
C. But for; might reach
(答案→)D. If there hadn’t been ; could have reached
解析：句意：要是没有雷雨的话，他们本能够及时到达来帮助那个受伤的人的。他们对此表示很抱歉。if引导的从句是对过去发生的事情的假设，句子要用虚拟语气。if从句用had done,主句用would/should/could/might +have done的形式。故选D.
