i know!公仔箱論壇1 y! P; O U8 X1 I
when they can have 15 mins discussion.5.39.217.77:8898" j4 N$ b0 Q R, ~. R: r
make 1 of them to do a specific job whcih is counting2 ?7 M. P. Q/ ]& Y& X* w* i: e
only him can turn on off off the light.
- z1 v: P0 {5 x/ K5.39.217.77:8898Basically, if you are the first time to get in the room, turn on the light,
! d3 V: k- o2 m: @ [4 dthen wait for "the special man" to turn the light off....
1 v+ G1 l0 m4 z2 f7 gwhen "the special man" count in up to 30 (included himself)
`. f: M% }: }+ k5 l; P: p公仔箱論壇then it is done! |