I'm baffled. I just bought a book, Barron's Pocket Guide to Correct English, that I was going to send to a friend of mine in Russia. However, either I don't know my own English very well and need to brush up myself, or there is a mistake in the book! Page 15 discusses subject-verb agreement. Examples are: One of the men was guilty. A range of goods was available. All along the coast lie traces of oil slick. No problem. That is what I've always been taught. However...page 16 says, "The verb in an adjective clause must agree with the right noun or pronoun in the clause before it: She is one of the most famous writers who have ever lived." It just sounds wrong, wrong, WRONG to me!! Can anyone please explain this to me?