i know!5.39.217.77:8898, B& E: E; B; x- y
when they can have 15 mins discussion., E3 m; g' _# n) o2 h
make 1 of them to do a specific job whcih is counting3 [# L$ W# d3 @) b9 B5 B+ f
only him can turn on off off the light.公仔箱論壇3 A( {9 T: ?0 u, \# A
Basically, if you are the first time to get in the room, turn on the light, 公仔箱論壇8 S% r, V( ]: u {
then wait for "the special man" to turn the light off....
4 S! q/ ^5 k& ]4 q( C z! d2 O2 D; Bwhen "the special man" count in up to 30 (included himself)公仔箱論壇9 E l9 Y# r# t
then it is done! |