Commas between Compound Predicates

We learn from CMOS 6.23 that “a comma is not normally used to separate a two-part compound predicate joined by a coordinating conjunction.” In other words, when the subject isn’t repeated after a word like “and” or “but” in a compound sentence, a comma is usually omitted.

A Chicago Style Halloween Quiz

What does Halloween have to do with Chicago style? Not a lot, but that hasn’t stopped us from coming up with ten questions designed to challenge your editorial knowledge and stoke your curiosity about this quirky holiday and some of the words associated with it.