5. Which of the sentences below are imperative? Mark them with "I" !) You made a mistake in the last exercise. 2) Set that box down on the floor. :) You are afraid of dogs. ) Put these envelopes in the mailbox when you go out. 5) You are not the brightest bulb in the lamp. 6)Get that cat off the dining table! 7) Wash your hands before the meal. 8) Clean up that mess right now! 9) You have to share your toys with your sister. 10) Fold the laundry when it's dry.