问题补充:
Lucy is the of the twins, and she is the girl in her class.
A. younger; younger
B. youngest; youngest
C. younger; youngest
D. youngest; younger
答案:
A. younger; younger
B. youngest; youngest
(答案→)C. younger; youngest
D. youngest; younger
解析:英语中在两个中进行比较用比较级,在三个及以上进行比较用最高级。跟据前文在双胞胎中,可知前文用比较级。下文在班内进行比较用最高级。故选C。