问题
选择题
(2013·山西高三诊断)Honey, you ________ alcohol for they have stopped drinking.
A．may not have bought
B．mustn't have bought
C．can't have bought
D．needn't have bought
答案
答案：D
D 考查情态动词。句意：亲爱的，你本来没有必要买酒的，因为他们已经不喝了。根据句中的“they have stopped drinking”可知应选needn't have bought，表示“本来没有必要买的”。故D项正确。