21.   Everything that humans do, fairy folk did too, and still do.

22.   Flying is magic, something humans did in dreams long before the Wright brothers.

23.   Griffiths and Thwari knew that birds contain different sex chromosomes just as humans do.

24.   He added that for all that humans do to protect them, the gorillas themselves have been smart in protecting themselves from poachers or soldiers.

25.   Here, in fact, humans do worst of all.

26.   How is it that a doorbell does not need to yell or repeat itself, but humans do?

27.   Humans will do anything to improve eyesight.

28.   Humans do so all too readily.

29.   I thought, what else do humans do with light?

30.   Humans are interested in sex, according to the popular version, because sex is what humans do to get more humans.