Click on the the green flag to start or to retry your test. Enter the word where, i.e., "1" should be by clicking the button labeled "1." and typing in your answer (don't forget to click on the check mark icon, or, press the [ENTER] key). Do the same for the other numbers and, when you've finished, submit your answers with the button labeled "SUBMIT" to see your final score. A score of "4 / 4" is a PERFECT score!
I was bored and I wanted to make a testing system like to one of an online, say, homeschooling test. It's a very simple sentence, not complicated at all, really because it wasn't supposed to be impressive (maybe in the future I can improve it or make more complicated version). This project was made in, I think, an hour or less.