For this case we must be aware of the conjugation time of the correct verb.
We have then, that the sentence written correctly in English is given by:
Last night I ate a vegetable dish that I liked but before, I did not like to eat vegetables.
The translation of this sentence into Spanish is given by:
Anoche comí un plato de vegetales que me gusto pero antes, no me gustaba comer vegetales.
Answer:
The correct options are:
First: me gusto
Second: me gustaba
