Listen to this! My grandpa always tells us stories about his childhood. He has a lot of old photos. My grandma loves knitting sweaters for all of us. My uncle, Mark, is a great swimmer, and he goes to the pool every day. My aunt, Sarah, is a teacher, and she helps me with my homework.
Yukarıdaki diyaloğa göre, Mark'ın hobisi nedir?
A) Telling stories.
B) Knitting sweaters.
C) Swimming.
D) Helping with homework.