Free ebook sites...

https://geronimostilton.com/  

http://www.publicbookshelf.com/ 

https://www.funbrain.com/books/diary-of-a-wimpy-kid/page/1

 http://www.astorybeforebed.com/storytime

 https://nckids.overdrive.com/media/1665232

 http://www.eastoftheweb.com/short-stories/childrenindex.html

 https://www.kobo.com/ 

http://knovels.net/

 https://www.24symbols.com/ 

https://www.bookrix.com/books.html

 http://www.readcentral.com/ 

http://www.openculture.com/ 

https://www.si.edu/Kids 

 http://www.e-learningforkids.org/

 http://www.sacred-texts.com/

 http://www.readprint.com/ 

 http://manybooks.net/ 

 https://www.questia.com/library/free-books 

https://www.widbook.com/ebooks/romance

 https://www.amazon.com/b?node=2245146011 

http://www.starfall.com/ 

http://www.storylineonline.net/

 http://en.childrenslibrary.org/

 https://www.getepic.com/

 http://www.bookadventure.com/Home.aspx

 http://www.manybooks4u.net/ 

https://www.reddit.com/r/freeEBOOKS/wiki/febooks 

https://glli-us.org/2017/03/08/recent-french-graphic-novels-for-teens-middle-schoolers/ (Franch book in English)