问题补充：
Jimmy is than his brother.
A. very outgoing
B. much outgoing
C. more outgoing
D. outgoinger
答案：
A. very outgoing
B. much outgoing
(答案→)C. more outgoing
D. outgoinger
解析：联系下文than his brother,可知本句表示在两个事物中进行对比,故前文用形容词的比较级,多音节形容词的比较级一般是在形容词前加副词more来构成,故选C.
