I remember most of these from reading Programming Pearls years ago so a lot of them came back from that, but a big hint to completing these is that the correct answer in this multiple-choice setup is usually the only one that is grammatically correct for the sentence. It would be more of a test for the unfamiliar readers if more of the "wrong" answers read like they could be correct.

Otherwise, fun to see these again! My favorite that was not included here (from memory): It's easier to make a 4" mirror then a 6" mirror, than it is to make a 6" mirror.