1) Sunday a) on b) in c) at 2) the afternoon a) on b) at c) in 3) 9 o'clock a) at b) in c) on d) without preposition 4) 2020 a) on b) in c) at 5) winter a) in b) at c) on 6) Friday afternoon a) at b) on c) in 7) Christmas a) on b) in c) at 8) Christmas day a) at b) on c) in 9) 19th century a) in b) on c) at 10) Halloween a) on b) in c) at 11) lunchtime,dinnertime a) on b) at c) in 12) weekend a) on b) in c) at 13) noon, midnight a) at b) on c) in 14) 15th December a) at b) in c) on

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