Just a simple game of Who's Who?/Guess Who?, made with adult students in mind. Have students play in pairs with different game sheets. Each student picks a person on their sheet and then they take turns asking yes/no questions, trying to guess who the other person has chosen. Examples of questions: Are you a woman? Have you got blonde hair? Are you wearing glasses? You can also play using 3rd person singular if that's what you want to practice: Is it a woman? Has she got blonde hair? Is she wearing glasses? Depending on your students' levels, you can use the game as a class activity or as a warmer/filler at the beginning or end of a lesson. Have fun!