i know!
1 n6 j4 f" Y. p3 xtvb now,tvbnow,bttvbwhen they can have 15 mins discussion.公仔箱論壇, l- Z8 _9 g* W' f$ \$ w* M
make 1 of them to do a specific job whcih is counting1 z0 k% g, I B! ?. o( D
only him can turn on off off the light.
$ j' ?+ q4 C8 E5.39.217.76Basically, if you are the first time to get in the room, turn on the light,
5 H* C! @6 @( D* `5.39.217.76then wait for "the special man" to turn the light off....
" L5 D8 I: o# M& Hwhen "the special man" count in up to 30 (included himself)
- p7 D6 y q Rthen it is done! |