Why do people who write in spanish always put a squiggly line over the e or n?

English to spanish-> do you (plural) practice sports?

1. completa la oración con la voz pasiva. the book was written by cervantes. el libro por cervantes 2. completa la oración con la voz pasiva con ser. the tall building was designed by the architect. el edificio alto por el arquitecto. 3. completa la oración con la voz pasiva con ser. the cookies were eaten by the children. las galletas por los niños. 4. completa la oración con la voz pasiva con se. the cake was eaten. la torta. 5. completa la oración con la voz pasiva con se. used cars for sale. carros usados.

What two types of verb is venir? regular and stem-changing transitive and stem-changing irregular and stem-changing irregular and compound