i know!
* Q: `, @; ?/ d1 J" H2 h公仔箱論壇when they can have 15 mins discussion.
8 ~% `! z! k' P3 i7 b- E公仔箱論壇make 1 of them to do a specific job whcih is counting
' K: A. Z! a% |only him can turn on off off the light.5.39.217.77( A1 h& n5 I0 Y$ S+ n
Basically, if you are the first time to get in the room, turn on the light,
6 Z) N# J& }, q' A; S5.39.217.77then wait for "the special man" to turn the light off....公仔箱論壇8 c9 l* u8 n0 [% _. V$ L
when "the special man" count in up to 30 (included himself)% L0 i, H K$ j; s9 _. I7 A6 ?' X
then it is done! |