Print a page, fill it out, scan it back. Or use a PDF editor (like GoodNotes or Notability). The ability to redo a drill 10 times without seeing your old wrong answers is critical for fixing fossilized errors.
Why? Because Japanese grammar at this level is not logical—it is habitual. You cannot reason your way through V-te shimaimashita (regret/completion). You must drill it. Minna No Nihongo 2 Renshuu Pdf
This is the "Intermediate Wall." Most learners crash here because they try to read the grammar book without doing the work. Print a page, fill it out, scan it back
The is not a supplement. It is the workout. The textbook is just the personal trainer telling you what to do. The PDF is where you actually lift the weights. You must drill it
The textbook shows you plain form. The Renshuu forces you to translate: "I go to Tokyo" (casual to friend) vs. "I will go to Tokyo" (polite to boss). You will fill in 30+ gaps until it hurts. That is good.