单选题 We regret ______ you that the goods you ordered are out of stock.
A. to tell B. telling C. having told D. to have told

【正确答案】 A
【答案解析】[解析] 单词用法题。regret to do sth.意为:很遗憾要做……。试比较:regret doing sth.对做过……感到后悔。