Stem-changing Verbs (e>ie, en YO) Tell the yo form of the verb in the present tense indicative. You may need to review vocabulary and structures at http://doncarlos123.tripod.com/advstemchangingpresent.html Tools See a list of terms used in these activities. Matching Flashcards (Java / non-Java) Concentration Word Search Activities created by: don Carlos Holman This activity was created by a Quia Web subscriber. To learn how to make your own, just like this, click here.