"Describe a hobby" seems like an easy topic. However, students often have difficulty speaking for 2 minutes when the topic is easy.
Here are 3 pieces of advice to help you to speak for 2 minutes:
1. Think about question words: What, when, where, why, who with:
One of my hobbies is photography. I’ve got two digital cameras: one small pocket-sized camera that I carry around with me, and one bigger, more expensive camera that I use on special occasions. I take photos so that I have a record of the things I’ve seen or done. Most of my photos are of friends and family, but I also take pictures of interesting things that I see.
2. Describe opinions and feelings:
I like photography because it’s a creative hobby and it makes you notice the world around you. I love capturing special moments or unusual or beautiful images, and it’s a great feeling to be able to look back through my pictures and relive different experiences.
3. Tell a story related to the topic:
The last time I took photos on a special occasion was at my friend’s wedding a few weeks ago. I got some great pictures of the bride and groom and their guests celebrating. After the wedding I made an album of all the best pictures and sent it to my friend as a present.
You don't need to tell the truth (I exaggerated my interest in photography) but it's usually easier to tell a story if it's real.