Choose the best preposition for each phrase.

"a holiday" - on; "10:30" - at; "midnight" - at; "the weekend" - at; "Monday morning" - on; "May 5" - on; "the afternoon" - in; "night" - at; "the 1990s" - in; "summer" - in; "Wednesday" - on; "fall/autumn" - in; "the morning" - in; "Sunday" - on; "Tuesday afternoon" - on; "spring" - in; "noon/midday" - at; "February" - in; "winter" - in; "2013" - in; "my birthday" - on; "a weekday" - on; "the evening" - in; "bedtime" - at.