Dima: i cooect them. sometimes i take part in competitions with them. they can big and small and different colours. they can move very fast. tanya: i like to visit different places. its always very interesting and you can learn a lot about their history and sight. my mother helps me plan me tours какие хобби здесь описаны?
Collecting things
P.S. Это весь диалог или есть с самого начала (не понятно значение them в данном отрывке (если уточнить, то там будет больше)
ещё можно добавить taking part in competitions