This document provides exercises to practice using the past tense of the verb "to be" in English. The first section fills in a table with the past forms of "to be" for different subjects. The second section completes sentences using "was", "were", "wasn't" and "weren't". The third section circles the correct form of "to be" in questions and statements. The document is designed to reinforce students' knowledge of using "was" and "were" in the past tense.