A forum is an online discussion group where people can hold conversations about a particular topic. It's like a virtual community where people with shared interests can come together to share ideas, ask questions, and provide support. Forums are often organized into different categories or subforums to make it easier for users to find the information they're looking for. Many online communities, from gaming to technology, rely on forums as a way for members to connect and interact with each other.

1: Volunteering activities help many teenagers find a sense of purpose in life.

2: The internet has enabled people to connect globally since its invention.

 1: It's been three years for I last went kayaking

2: The doctor advised me to spend more time in nature.

 3:The modern art collection will be exhibited at the museum.