congratulate
[kənˈgrætʃʊleɪt]transitive verb Conjugation
to congratulate sb (on sthg/on doing sthg) congratularsi con qn (per qc/per aver fatto qc)
to congratulate o.s. (on sthg) congratularsi con se stesso ( f stessa) (per qc)
Complétez la séquence avec la proposition qui convient.
If I had known you were vegetarian, I … a different meal.