i know!
" O: p+ m6 c2 t, y6 x- k% Y% S公仔箱論壇when they can have 15 mins discussion.www3.tvboxnow.com/ C! A- Y0 O# x. n/ W" V9 x
make 1 of them to do a specific job whcih is counting
3 [, x5 I) g6 m8 n8 p# i; i: G/ b, \公仔箱論壇only him can turn on off off the light.# E* _3 \$ N5 y0 B! z- X z
Basically, if you are the first time to get in the room, turn on the light,
7 m; Q, Y# S; U9 E, jthen wait for "the special man" to turn the light off....tvb now,tvbnow,bttvb0 ]6 r _* ]6 `, K7 J7 p
when "the special man" count in up to 30 (included himself)
$ O- Q# U0 Q! B5 _. |6 H g/ Mtvb now,tvbnow,bttvbthen it is done! |