Вставить в пробел правильный предлог из следующего списка: at, in, on, by, to, from. 1) i like staying up late. i’m never … bed before midnight. 2) i usually have lunch … the canteen … work. 3) we checked-in … the airport … 6.30.

1) I like staying up late. I'm never in bed before midnight.
2) I usually have lunch in the canteen at work.
3) We checked-in at the airport at 6.30.