你看看吧。好就拿。Firstly,let helen to talk with her friend and tell her that helen will help with her homework but can't copy it.Because if she always just copy,it is bad for her study.secondly,go to her friend's house to help friend's homework and do homework together.Beacause that can help both them finshed the homework.Thirdly,tell friend that she have to study hard and she will often helps her study.Because helen is her friend and she helps her study is also helps herself.
Dear Helen
First,I think you shouldn't let him copy your homework,bacause it's dishonest.Second,you should tell him it's not helpful to improve his math.
Then I think you should offer to help him with his math.If you do that,he'll realise you are helpful and friendly.And next time,do homework with him.
Best wishes!
Your
(你的名字)
建议自己修改点~因为这是教与学上的...答案