Litterae scriptae sunt.

English Translation

The letter was written.

shouldn’t it be letters?

1 Like

Se definition 3 below

littera f (genitive litterae); first declension

  1. letter (of the alphabet)
  2. (metonymic) handwriting
  3. (usually in the plural) letter, epistle

https://en.wiktionary.org/wiki/littera#Latin