Articles in use

[Brittain]

Please, insert any article - if needed - instead of the gap, and explain your choice.
1) Do you know, ... potatoes cost 4 pounds a kilo.
Thank you in advance.

[Marylin]

Please, insert any article - if needed - instead of the gap, and explain your choice.
1) Do you know, ... potatoes cost 4 pounds a kilo.
Thank you in advance.

Do you know, potatoes cost 4 pounds a kilo.

No artricle, you are just talking in general terms.