问题补充:
The new group of students are better-behaved than the other group who stayed here
A. early
B. earlier
C. earliest
D. the earliest
答案:
A. early
(答案→)B. earlier
C. earliest
D. the earliest
解析:句意:新的一组学生比先前在这儿的另一组学生更有礼貌。early早,是原级;earlier 是其比较级;earliest是最高级。该句有than说明要用比较级,故选B。
考点: 考查副词的等级的用法。