Learn Croatian: Jesi li obuo cipele pa zaključao stan? - Did you put on your shoes and then lock the apartment?

The conjunction pa specifically means "and then" or "and so." It highlights a sequence of events. In this sentence, it emphasizes that you put on your shoes first, and then you locked the apartment. If you used i (and), it would just mean both actions happened, without stressing the order.

Why isn't there another si or jesi before zaključao?

When you connect two past tense verbs with a conjunction like pa or i, you don't need to repeat the helping verb (the auxiliary). The initial Jesi li does the job for both obuo (put on) and zaključao (locked).

I thought the verb for putting on clothes was obući. Why do we use obuo here?

Croatian has a special verb specifically for putting on footwear (like shoes or socks): obuti. The word obuo is its masculine past tense form. You would use obući for putting on other types of clothes, like a jacket or a shirt.

Are cipele and stan in the nominative or accusative case here?