Storyline 2 can only put one blank filling exercise per slide through their free form option. This is a work around so a slide can have more than one blank filling exercise in a slide.
This e-learning has been demoed at the Learning Technologies 2017 for Omniplex/Cursim
Illustration done in Adobe Illustrator, E-learning done in Articulate Storyline 2
Taking the theme of ‘Guitar aces’
Try to put your rock and roll knowledge to test
You can download the blank filling exercise template here (Storyline 2 Version):