Because they are busy ,so they can't help us.改错 On my way to

Because they are busy ,so they can't help us。
Because 和So在一个句子中不能同时使用,删除任何一个都可以
改错 On my way to here ,I met my teacher:改错
删除to ,here是副词 前不需要加介词 同样的用法还有 on my way there,on my way home