This is a homework assignment with 45 different regular -ER/-IR, "Y", and stem-changing verbs that students have to conjugate in sentences in the preterite tense. The three verb categories are divided and labeled and each has 15 verbs. An answer key is included. The zip file includes both an editable Word doc and a PDF.
This homework is included in my Spanish Preterite -ER, -IR, Y, and Stem-Changing Verbs Lesson: