The boy is than his brother.A. confident B. more confident C. as confident

问题补充：

The boy is than his brother.

A. confident B. more confident C. as confident

答案：

解析：句意：这个男孩比他哥哥更自信。由than可知该用比较级而confident是个多音节单词，故前面加more构成比较级，所以选B。