peter is my best friend he often helps --- with sciencea\ meb\ youc\ himd\ her说理由!

peter is my best friend he often helps --- with sciencea\ meb\ youc\ himd\ her说理由!
peter is my best friend he often helps --- with science
a\ me
b\ you
c\ him
d\ her
说理由!

peter is my best friend he often helps --- with sciencea\ meb\ youc\ himd\ her说理由!
a
peter是我的好朋友,他经常帮助 谁 学习科学?
是我的好朋友,当然 帮助我 是最顺的了