Peter is my best friend. He often helps with science.A. meB. youC. himD. her

问题补充：

Peter is my best friend. He often helps with science.

A. me

B. you

C. him

D. her

答案：

(答案→)A. me

B. you

C. him

D. her

解析：句意：Peter是我最好的朋友。他经常在科学上帮助我。”在某方面帮助某人”用”help sb. with sth.”这里只提到了Peter和“我”两个人，而第二句主语是他，那肯定帮助的就是“我”，故选A。