HƯỚNG DẪN CHẤM MÃ ĐỀ 168 Phầnviếtlạicâu 65 He now wishes that he had taken the doctor’s advice 66 Peter apologised to the teacher for not doing the homework 67 He can’t have attended the Conference on Wildlife Protection yesterday 68 Had she not been seriously ill, she would have passed the exam 69 Ms Betty prides herself on her singing Bàiviếtluận Swimming is one of the most popular sports in the world Here are three reasons why you should get off of the bed right away and go to the nearest swimming pool to swim As well as being fun, swimming is a great way to keep fit, stay healthy and make friends.Firstly, we can keepfit when we swim When we practice, the muscles are developed, blood circulates easily in blood vessels As a result, we will have a good appetite and a sound sleep In fact, people who swim regularly will feel strong and healthy.Secondly, it is fun to enjoy doing things under water The scientists have found that our brains release hormones that make us happy while we swim Therefore, the more you practice, the more comfortable you feel.Finally, going to swim is one way in which we are making a lot of new friends We can meet a lot of people with the same hobby and share with them the skills we know It is a good way to start a relationship.After all, swimming is a healthy activity that you can continue for a lifetime It is highly recommended to anyone that wants full-filled life