"Do your reading." "Do a flip." "Do something to help." "Do the work assigned to you." There are many do+noun forms that can be put in the form of a question. "Do Americans support refugees?" "Do trains help alleviate traffic?" "Do teachers care about their students?" Here are examples of do+pronoun forms. "Do you know how to get to New York?" "Do we know where we are going? "Do they eat Mexican food?