@LaChaise: The standards American Englishs
which evolved in Upstate NY, Pennsylvania, and parts of the Midwest. "Radio English" was never really influenced by much of the region, and the
Northern Cities Shift means that most of those areas where General American originated now speak oddly. But we still have a stereotype of "Midwestern" as being a "neutral" American. This stereotype is particularly strong in the Midwest itself.
Any rate, because of this stereotype, a lot of materials trying to teach standardized American English draw on any and all dialects of the Midwest, including those weirdos in Minnesconsin. I recall as a kid in Elementary school, I had an "IQ test," part of which was defining the words someone from the Midwest was saying. I couldn't understand half the words, and the administrator wasn't allowed to repeat them. I still scored above average, but about 20 points below where I scored on a different, less-culturally-biased, test in high school.
Point being, I wouldn't be surprised if many of the teaching materials you used drew heavily on the Upper Midwest.
Several of the answers I wasn't sure about, because I found multiple answers acceptable. For example, when talking about the grass in the middle of the street, it's an "island" if you're talking about a small one, a "traffic island" if you're giving directions involving a small one, and a "median" if it runs for a long time. A circle you go around in is a "roundabout" if it has only one lane and a small circle, and a "rotary" if it has two lanes and a large circle. (Though I'd default to "roundabout," while most New Englanders default to "rotary.")
Then there's things like pill bugs and service roads, which we don't have where I come from. I know about pill bugs from a book, but also know the terms "sow bug" and "roly poly," Unlike fireflies, which I would never call "lightening bugs," I'd probably call a pill bug by whatever name the person I was talking with about it uses. Similarly, I call the highway-parallel roads "access roads" when I'm in Florida and "service roads" in Texas.
I'd like to note that every result, the test claims that the answer which shows I'm from near Springfield is "sneakers," which is BS. The whole Northeast uses "sneakers," but only Western Massachusetts, Connecticut, and the Brattleboro, VT area use "tag sale."
Any rate,
here's one of my results.