i know!
$ ^! }5 P7 {. e f! O7 Q: b公仔箱論壇when they can have 15 mins discussion.
" v9 l: p E( \: B2 H' l- n公仔箱論壇make 1 of them to do a specific job whcih is counting- L' A2 ?% G3 ~+ H$ M& P& C- i4 k
only him can turn on off off the light.公仔箱論壇0 w0 ?8 D2 D a+ }
Basically, if you are the first time to get in the room, turn on the light,
4 Y7 }3 F0 M; f* B% T4 r+ k公仔箱論壇then wait for "the special man" to turn the light off....公仔箱論壇& U6 ]; K; I4 s9 a8 @5 o
when "the special man" count in up to 30 (included himself); u( p2 h; L5 \! c; N3 |0 l8 E% b
then it is done! |