Susan is my good friend and she always helps me my Maths.A. inB. onC. forD. with

问题补充：

Susan is my good friend and she always helps me my Maths.

A. in

B. on

C. for

D. with

答案：

A. in

B. on

C. for

(答案→)D. with

解析：介词辨析。in 在里面； on在上面；for为了；with带有，伴随。句意：苏珊是我的好朋友，并且他总是帮助我学习数学。固定句型结构help sb with sth表示帮助某人做某事。故选D。