Specific answers for the "Renshuu B" textbook practice sections can be viewed on Scribd's Practice Guide .
Don't let the lack of an answer key slow you down. Get the PDF (legally), correct your work, and watch your Japanese skyrocket. がんばってください (Good luck)! minna no nihongo lesson 1 to 25 pdf answers
This has led to a cat-and-mouse game online: Specific answers for the "Renshuu B" textbook practice