单选题
The neighbors ______ you very much for you to speak in that way about them.
A. must annoy B. may annoy
C. must have annoyed D. could have annoyed
【正确答案】
C
【答案解析】[解析] must后面跟完成式表示说话者以肯定的语气推断过去发生的事情或在说话之前必定发生了某事。相当于I'm sure sb．did sth．或I'm sure he has done it。