问题补充：
The elder brother his mother, while the younger one is his father.
A. looks after; look like
B. takes after; similar to
C. looks like; take after
D. looks the same; similar with
答案：
A. looks after; look like
(答案→)B. takes after; similar to
C. looks like; take after
D. looks the same; similar with
解析：句意：他的哥哥与他的母亲相像，然而弟弟像他的父亲。下文前已有系动词is，故排除选项AC，选项D中looks the same后面不能直接接宾语，故选B。
