<span>actividades extracurriculares = extracurricular activities</span>
1. Conocen
2. Sabemos ( I think the sentence is a bit wrong itself bc it should be Ellos (they) instead of nosotros (we) but thats maybe a book or question error)
3.sirven
4.pides
Buena suerte! Good Luck!
That sentence in English: When I was young, I loved visiting my uncle.
este uso del verbo es correcto