Here are suitable words to fill in the blanks based on the context provided:

1. **spending**
2. **because**
3. **fresh air**
4. **sometimes**
5. **occasions**

The filled sentences would read:

Some teenagers enjoy (1) **spending** free time with their friends. Others prefer doing leisure activities with their family members. I love spending time with my family; it’s a great way to connect with them.

At the weekend, we usually go for a bike ride. We cycle to some nearby villages to enjoy the (3) **fresh air**. We take photos and look at them later. My big brother and I are also into cooking. My brother looks for easy recipes. After that, we prepare the ingredients and cook. Sometimes the food is good, but (4) **sometimes** it isn’t; nevertheless, we love whatever we cook. The leisure activity I like the most is doing DIY projects with my mum. She teaches me to make my own dresses and doll clothes. On (5) **occasions**, we make special dresses together. Once I won the first prize in a costume contest at my school.