Hey, how do I download it?
This is a warmer, and there is nothing to download. It's just an idea for your lesson, not a worksheet.
This is like skiing. Divide students into two teams and give each team two blank A4 sheets of paper. It's a race. Students using sheets of paper have to ski same distance and back. In one end of the distance you can set a task according the things you have taught, e.g., write three forms of irregular verbs or finish the sentence. The first team to finish the task are the winners.