The words to complete the story are compramos, miré, pensé, buscó, encontró, compramos, gastamos, pagamos, quedó, compraron.
To select the correct verb read the sentence and make sure to understand the context, then select the correct word. For example in "Luego, mi hermano (explicar / buscar) una falda verde" they are speaking about a green skirt, and therefore, the verb buscar (search) is the correct one, not the verb explicar (explain).
The b should be in simple past since this is referring to a past action. Here is a pattern of this tense:
Based on these two aspects the answers are:
Learn more about Spanish in: https://brainly.com/question/21969633