Usage and Grammar

Q. Oath of Office. Who was grammatically correct, President Obama or Chief Justice Roberts? Should faithfully as an adverb come at the end of the sentence or after execute? Or is the oath correctly written with faithfully as an adjective before execute?

A. English is relatively fluid with the placement of adverbs, so there are plenty of correct ways to fit faithfully into that sentence, including both of these. In fact, the number of choices makes it harder to remember the traditional word order—and easier to flub.