Answer:
3) comencé - creyó - expliqué.
4) pagué.
5) leyeron - leí - gustó.
They are all written in past tense.
Explanation:
C. Para sentarnos, usamos un sillón.
false
they are not always used interchangeably. It depends on the scenario and in Spanish if in the scenario it is interchangeable often the one that sounds better is used.