Driving is a big responsibility. If you drive, there are many things you must do to make sure your car is safe to drive. Be sure the lights and turn signals are working before you drive. Check the windshield wipers, in case you get caught in the rain. You should check the air pressure in your tires. Finally, get regular oil changes, and adjust your mirrors and seat before driving. Revise the passage below to delete the two shifts in verb mood. Your revised passage should use only imperative mood.