Answer:
- Yo nadé.
- Las chicas estudiaron.
- Ustedes tomaron.
- Vosotros trabajabais.
- Nosotros cantábamos.
- Tú caminabas.
- Él hablaba.
- Alex y yo nadábamos.
- Tomás buceaba.
- Usted levantaba.
Explanation:
In Spanish, the past tense of verbs describes actions carried out in the past tense, therefore, following the instructions, we must transform all the verbs that are in the parenthesis into past tense, this is achieved by identifying the person and the gender so that it is consistent with what is being expressed when conjugated.