The Answers

20. c
Law 1 the Field of play sets out the dimensions of a pitch the maximum length is 130 yds (Interested I’m still using the old sizing – but your right, FIFA have gone metric)

21. b
Law 4 the player equipment provides that shin-guards must be worn, it does not state anything about friendly matches.

22. d
Law 3 The number of players states that “A player who has been sent off before the kick-off may be replaced only by one of the named substitutes.”