Around 11 （几点睡就写几）o'clock.
Almost everytime.
I usually let them on at the same time to fully make use of cloud services.
Sometimes I do.
No,there is no such policy concerning recycling of batteries in our country.
That depends on the season.Mostly around 300 yuan.
Of course not unless I forget to unplug it.
Yes,I usually let the bathroom light on.
Over 8 hours.
如果要知道问题的意思可以继续追问我.