One hundred questions, hand-picked to target exactly the traps Korean students hit most often: subtle vocabulary distinctions, dense syntax, data tables with a twist, causal-vs-correlation inferences, and rhetorical-synthesis goal-matching. Answer choices are graded instantly — click any option to reveal the correct answer and a full explanation. No timer, no gates: scroll through all ten sets in one continuous run, in any order, as many times as you like.