It's according to the question.   Example,  I was so tempted to ask him ..who am I? It would be sad, on both parts if he didn'tknow the answer. It got to the point where I knew the answer to that anyway. 
 Asking if they want a drink or food..still, it's according to how far along they are in the illness.  Yes. It got so I just prepared a meal for him and decided what drink would go with it. I knew he loved a certain drink.  That was easy.  Food too. He really started liking Mushroom soup!  Probably because it was easy to swallow. Soups were. He got dysphagia pretty bad.