译句：在我的书包里没有多少练习本了

There aren't many exercise-books in my schoolbag.
绝对正确，我赌咒。
楼上的notebook指笔记本，mine是一个宾语代词。，do not是相对于我而不是我的书包，有“在”应用"there be"。并且这句话是否定句，应用否定式not many，而不是are few。is little 是单数形式，就更离谱了

Not how many exercise book in mine book bag

There are few textbooks in my school bag.
few用来修饰可数名词，表示“几乎没有”，而little则用来修饰不可数名词，同时注意不要将few改成a few。

There are few note books in my schoolbag.(包准确）

I don't have many notebooks left in my bag

There is a few exercise books in my schoolbag