帮忙翻译的活儿！！！爱好这口的进。。。

1。红军在长江中走过，25000里路程（cover)
the Red Army marched through the yangtz river,which covers 25000miles
2。如果没有人要这本书，我们就给他吧（might as well)
if nobody wants this book,we might as well give it to him .
3。这个故事一代代传下去（pass on)
this story passed on from one generation to another .
4。如果你想学好英语，你应该有好的语感（sense)
if you want to learn english well,you should have a good sense of language.
5。据说苍蝇会引起疾病（breed)
it is said the fly could breed disease.