i know!
8 _& ~. _$ M( C4 W# g# N; O# a公仔箱論壇when they can have 15 mins discussion.
& q# D T( S& }9 [make 1 of them to do a specific job whcih is counting
. u! X# K) \1 K6 ]公仔箱論壇only him can turn on off off the light.
3 k' A9 Z* W: P0 z公仔箱論壇Basically, if you are the first time to get in the room, turn on the light, tvb now,tvbnow,bttvb4 b. }( `4 I. s
then wait for "the special man" to turn the light off....5 @4 Z7 Y3 {- ?7 ?. {
when "the special man" count in up to 30 (included himself)# _$ e1 o' p/ T G3 s' t8 C
then it is done! |