问题
选择题
Alan is a careful driver, but he drives ______ of my friends.
A．more carefully
B．the most carefully
C．less carefully
D．the least carefully
答案
答案：D
形容词（副词）比较等级在特定语境中的用法。由题干中的but可知，后半句表否定意义，故选D项。the least+形容词（副词）+原形，表示“最不……”。