6) Study the table. Find examples in the invitations in Ex. 1. Prepositions of time: at, on, in.

at — с часами и некоторыми периодами: at 8:00, at night, at the weekend.

on — с днями недели и датами: on Monday, on 6th May.

in — с месяцами, временами года, годами и частями дня: in January, in autumn, in 1992, in the morning, in the afternoon, in the evening.