I DIDN’T KNOW HOW TO COOK UNTIL I WAS 14. A. IT IS NOT UNTIL I WAS...

12. I didn’t know how to cook until I was 14. a. It is not until I was 14 when I knew how to cook.b. It was not until I was 14 that I knew how to cook.c. It was until I was 14 that I knew how to cook.d. It was not until I was 14 that I know how to cook.