i know!5.39.217.76- u7 U: [/ g- W- b3 u2 T
when they can have 15 mins discussion.! Y% L; ^/ B# C
make 1 of them to do a specific job whcih is counting
* h5 Q q! L+ wonly him can turn on off off the light.tvb now,tvbnow,bttvb# C! n3 N$ Y& w& t+ n" c
Basically, if you are the first time to get in the room, turn on the light,
. s% U& W. R- \then wait for "the special man" to turn the light off....
# Z& R0 }! L- X4 |5 i2 Q: m' Dtvb now,tvbnow,bttvbwhen "the special man" count in up to 30 (included himself)5.39.217.760 q4 ~6 B' X) C9 }
then it is done! |