Questions & Answers about W lodówce zostało jeszcze trochę mleka.
Because after w meaning in, Polish normally uses the locative case for location.
- dictionary form: lodówka = fridge
- locative singular: w lodówce = in the fridge
This is a very common pattern:
- w domu = in the house
- w szkole = at school / in the school
- w lodówce = in the fridge
So lodówce is not a different word, just the correct case form of lodówka.
Here zostało means something like was left, remained, or there was still ... left.
The verb is from zostać, which often means:
- to become
- to stay behind
- to remain / be left
In this sentence, it has the remain / be left meaning:
So this is not become here. It is the idea of something still remaining.