A: I can't read my book. B: Turn on the light. A: The light is on. B: Open the book. A: The book is open. B: See an eye doctor. A: That's what I need to do. B: He'll give you a prescription for glasses. A: I'll make an appointment tomorrow. B: I'll get the yellow pages for an eye doctor. A: Read the phone number to me. B: I'll read it very loud, in case your hearing is getting bad, too.