A.单句填空(每小题1.5分，共15分，限时8分钟)
1．[2016·衡水中学预测]Tom was sorry to learn that his grandfather ________ (die) for half an hour when he got to the hospital.
答案 had been dead [句意：到医院时得知他的祖父已经去世半个小时了，Tom很难过。设空处表示的动作在got to the hospital之前发生，故设空处用过去完成时；又根据for half an hour可知设空处表示状态，而die为瞬间动词不能与表示一段时间的时间状语连用，故用had been dead。]
