I need help with conjugar los verbos AR

Cuando yo blank ocho anos, fui a la playa con mi familia

Ojalá que uds. a clase mañana. a. saben b. vienen c. vengan d. sepan

"in english, write six to eight sentences comparing cultural aspects of greetings in spanish-speaking countries with greetings in your own culture. use what you learned in the lessons to tell about three differences and three similarities. discuss non-verbal greetings and how respect is shown. you may also include verbal greetings, but do not simply translate phrases from one language to another."