It's before the "and".
Ex: When I went to the store, I had to get ice cream, milk, eggs, and butter.
Yes, it is common to use a comma before "and" when listing items in a series. This comma is known as the Oxford comma and can help to avoid confusion and clarify the items in the list.
No, a comma does not go before the word 'in'.
it goes after. like ... so, what did you do at the weekend? There you gooo :D
A comma should typically come before the word "anyway" when it is used as an introductory word in a sentence. For example: "Well, anyway, I have to go now."
An comma goes before so
It could go either ways?
Not necessarily. There is no word in English that requires a comma before or after it.
no
No.
After
after
Before