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.