问题补充:
My friend English than me, so she often helps me with my projects.
A. does better on
B. is good for
C. is best at
D. does better in
答案:
A. does better on
B. is good for
C. is best at
(答案→)D. does better in
解析:be good at和do well in都可以表示擅长做某事,比较级是be better at和do better in,故本题选D。