<h3>— ¿Cuándo _____ la camisa azul? Me gusta.</h3>
Answer: B. compraste.
Entire sentence: ¿Cuándo compraste la camisa azul? Me gusta.
Translation: When did you buy the blue shirt? I like it.
Explanation: The question is when, so the answer should be when something was done. The only verb that answers that question is to buy. As you are asking a interlocutor, the subject of the question is "tú" or "usted", depending on whether the second standard or formal person is used. As it is not indicated, the most frequent is to use the standard form. ¿Cuándo compraste tú?, but if you want to use the formal second-person, it would be: ¿Cuándo compró usted? The question is ambiguous.
the more important in friendship: what works worse in your country: the more interesting in your region: the best to stay in shape: the more difficult in the couple: the more stranger in your country: the more serious in the world
1. Marcia es más alta que Tomás 2. Delia es menos estudiosa que su hermana 3. Los niños son tan inteligentes como las niñas 4. Me gusta ir a la cafetería más que ir al gimnasio 5. Mis papas son mayores que mis Tíos y tías 6. Las bananas son mejores que las uvas 7. La sopa es peor que el yogurt
(Spanish is my first language so I hope it helped you!!)