I buy foodstuff at the supermarket every week.

The use of this service is free.

I purchased a new car.

I purchased a new car.

I go to the library every month.

I go to the library every month.

He attends a class to learn dialects every month.

I shop at the nearby grocery store every Saturday.

He makes purchases on credit at the supermarket every month.

He uses credit purchases to buy his monthly groceries.