that / be able to / I shall not / I am sorry / visit your company / you arranged / at the time
【正确答案】：I am sorry that I shall not be able to visit your company at the time you arranged.
【题目解析】：句意为很抱歉，我不能按您安排的时间去拜访贵公司。句型I am sorry that意为”我很抱歉......“，be able to do sth.意为”能够干某事，其后要接动词短语visit your company；you arranged作后置定语，意为“您安排的”。
