I'm not exactly sure, if you really don't get it, I recomend asking the teacher for help or if it is for summer, search help from and adult or reliable source, or another answer lol
sorry I count help! but, just some advice!
I don’t understand the question..
Answer:
The imperfect tense is used to refer to actions in the past that occurred repeatedly.
Explanation:
Answer: había bebido
Cuando llegué, Marcela ya se había bebido cuatro vasos de leche.
When I arrived, Marcela had already drunk four glasses of milk.
Explanation: the Spanish plusquamperfect expresses the idea that something occurred before another action in the past. The action to arrive, it happened after the drinking action was over. In English this tense is named past perfect.