A preposition is a word that connects one thing with another, showing how they are related.
Some prepositions tell you about time.
For example:
"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: