During the selection of linguistic indicators, we have taken into consideration previously studied features of readability (François and Fairon, 2012; <cite>Heimann Mühlenbock, 2013</cite>; Vajjala and Meurers, 2012) , L2 Swedish curricula (Levy Scherrer and Lindemalm, 2009; Folkuniversitet, 2013) and aspects of Good Dictionary Examples (GDEX) (Husák, 2010; Kilgarriff et al., 2008) , being that we believe they have some properties in common with exercise items.