1 Bonus Factoid and Suggestion: It so happens that you can occupy a bright child for most of a very quiet morning by challenging her to use that five times in a row in a single coherent sentence, to which stumper the solution is all about the present distinction: “He said that that that that that writer used should really have been a which.” (You can up the challenge to six in a row if the kid is old enough to know about the medial-question-mark-in-sentence trick: “He said that? that that that that that writer used should have been a which?”)