i know!5 W% S( }. n0 j( o' c' c! e e/ a
when they can have 15 mins discussion.8 ?9 |; J2 D3 }3 r7 r0 i7 ` [
make 1 of them to do a specific job whcih is counting5.39.217.77:88988 O+ m# A& g j
only him can turn on off off the light.
; \" O6 Z& k: y- b. p* M7 L5 o8 mBasically, if you are the first time to get in the room, turn on the light, 公仔箱論壇/ _5 s2 p! R% d- F0 d& W
then wait for "the special man" to turn the light off....2 i' @* Z( w: M
when "the special man" count in up to 30 (included himself)1 k- @& j* L1 O! V9 K* e
then it is done! |