A preposition is a word that connects one thing with another, showing how they are related.
Some prepositions tell you about time.
"Many shops close on Sundays."
"It snows during the winter."
At is used with times: at 10am
In is used with months, seasons, years, and long time periods: in June, in winter, in 1975, in the 1980s
On is used with days and dates: on Monday, on 11 May
For is used with a period of time. It shows a starting and ending time: for six months, for 10 years
Since is used with a starting point: since June, since 1572
Choose the correct preposition in each sentence: