Put in at, on or in where necessary.
We often have a short holiday *** Christmas.
Do you work *** every Wednesday?
I’ll see you on Friday.
I’ll see you next Friday. none
What are you doing on Saturday?
What are you doing at the weekend?
They often go out in the evenings.
They often go out on Sunday evenings
Do you work on Wednesdays?
Do you work every Wednesday? none
We usually have a holiday in the summer.
We often have a short holiday at Christmas.
Pauline got married in 1991.
Pauline got married on 18 May 1991.
Chris is getting married this year. none