Copy editors need to keep their eyes on verbs. Readers notice when verbs don’t agree with their subjects. Yet it’s easy sometimes to get lost in a tangle of phrases on our way to the verb. Intervening phrases can lead writers to choose a singular verb when a plural verb is needed or vice versa. I noticed such a problem in a history museum exhibit today. Seeing a problem in a public sign came at just the right time, though, because I was at work on a new Grammar Guide quiz all about verbs.