(IN / AT / ON) May
ON
IN
AT
(IN / AT / ON) the morning
ON
AT
IN
(IN / AT / ON) dinner time
IN
AT
ON
(IN / AT / ON) 2017
IN
AT
ON
(IN / AT / ON) Tuesday
ON
IN
AT
(IN / AT / ON) New Year's Eve
IN
AT
ON
(IN / AT / ON) summer
AT
ON
IN
(IN / AT / ON) 2 o'clock
ON
IN
AT
(IN / AT / ON) August
AT
IN
ON
(IN / AT / ON) night
IN
AT
ON