20. Read the paragraph below. What is the paragraph's main message? I learned to swim when I was six years old. My mother took me to the local pool and left me there for an hour every week. At first, I was worried that I would not pass the dass. I knew I would be embarrassed if I had to take it again the next summer. After a few weeks, though, I stopped worrying and started having fun with the other kids. The instructor let us play for a while every week after ou lesson. Before I knew it, I could swim halfway across the pool. Leaming to swim can be a very frightening experience. Leaming to swim is more fun when you have frends in the class. Learning to swim was easier than the writer thought it would be. Leaming to swim is something that everyone should do.​