These are the complete sentences:
In this exercise, you have to write the opposite to what Lucía says to Daniela. Opposites and antonyms are words that have the exact opposite meaning to the one described first.
For example, the translation to the first sentence is:
Lucía: Fermín and Carla hate each other.
Daniela: No, that's not true. Fermín and Carla love each other.
Check more information about antonyms here https://brainly.com/question/386316