It’s summer. Some people are all staying at home and some people are swimming, walking or working in the company. It’s hot. So many business person begin to sell the ice-cream or cool food. Now, a lot of people maybe are swimming in the swimming pool or sea. Attention! The people who swimming in the sea are very dangerous. First, because the sea is very dark.. Second, because there are a lot of danger things in the sea. Third, if you are swimming, but suddenly your leg hurts, you can’t swim to back, now you are in danger. On summer vacation, many people are traveling on the beach. Some people are playing sand. Some people are relaxing under the sunshine. Some people are swimming in the sea. They are enjoying themselves, aren’t they?