-How careful Jim is! - He writes ____ in our class.
A.more careful B.most carefully C.most careful D.more carefully
B
【详解】
句意:吉姆多仔细呀!他是我们班最仔细的。
A. more careful比较仔细的,形容词的比较级; B. most carefully最仔细地,副词的最高级; C. most careful 最仔细的,形容词的最高级; D. more carefully比较仔细地,副词的比较级。根据in our class知用最高级;排除AD;又因为该空修饰动词write,故使用副词,排除C,选B。