Lucy didn’t make mistakes in the math exam. She is in my class.A. the most careful B. the

问题补充：

Lucy didn’t make mistakes in the math exam. She is in my class.

A. the most careful

B. the most careless

C. more careful

D. much careful

答案：

(答案→)A. the most careful

B. the most careless

C. more careful

D. much careful

解析：句意：露西在数学考试中没有出错。她是我们班最细心的学生。careful仔细的，是个多音节词，其构成的比较级要加more,构成的最高级要加the most,根据句意判断，句中有in my class这样一个范围，故用最高级形式。故选A