1- tu comprarles los libros.
2- yo enseño la lección
3- nos están dándo ordenes.
The correct answer is A) Toque. You use tocar to describe playing an instrument (even though jugar means to play too). And you want to use the past tense form of tocar which is toque because the sentence is saying you did this action yesterday.
Tu habrás puesto la solicitud en el buzón.
He had connections through his father in-law to which he was asked to paint a portrait of the young King Phillip IV. Philip was delighted with the result that he immediately appointed Velázquez as one of his court painters, and from then on he would allow no one else to paint him.