i know!
/ s: C* [/ |, I4 U7 s. ^when they can have 15 mins discussion.公仔箱論壇6 ]" V) ?, o- e: C% o0 y
make 1 of them to do a specific job whcih is counting
$ \* ?( p2 e& |' b' u6 Z, Oonly him can turn on off off the light.
/ b2 C$ B! O* A6 L p3 e7 VBasically, if you are the first time to get in the room, turn on the light, 5.39.217.76* D: X, r: P4 x
then wait for "the special man" to turn the light off....5.39.217.76; `! {1 y+ \9 i/ b" I
when "the special man" count in up to 30 (included himself)0 n6 n0 L) H6 c* M
then it is done! |