Nowadays, football is one of the most popular sports in     1    world. Its history    2     (go) back over two thousand years to ancient China, and it was known as cuju then. Modern football started in Great Britain,    3     the new game rules were made.

Football is simple and very cheap    4    (play), which is perhaps the basis of the popularity. People needn’t expensive equipment    5    the football doesn’t cost much money.

Another factor behind    6    (it) global popularity is the creativity on the field. It is attractive    7    millions of people. People can see children playing with a ball everywhere. People also can feel the    8    (excite) of a game even without recognizing the skill of professional players.

What’s more, it has become one of the    9    (good) ways for people to communicate. It doesn’t require    10    (word), but everyone can understand it. It breaks down walls and brings people together on and off the field.

Tai Chi Chuan,     1     is famous as a kind of martial art, has been practiced China for centuries. It combines slow movements, deep breathing and thinking. Every movement in Tai Chi represents     2     important part of old Chinese philosophy—harmony.

Tai Chi is a term in the Chinese     3     (tradition)philosophy. It comes from The Book of Changes(《周易》). In the time of Song Dynasty, Zhou Dunyi     4     (write) the book Theory of the Tai Chi Pictures. The inventors of Tai Chi     5     (inspire)by this book and invented Tai Chi Chuan with the continuous movements of drawing circles in the air by     6     (guide) the breath with the willpower. They also absorbed the thoughts of the Taoist, such as the concept of Yin and Yang. Tai Chi provides the mental relaxation and physical     7     (fit).

Tai Chi is an unusual form of martial arts where we believe     8     building mental and physical strength. It is     9     (particular) different from western types of sports such as football where the harder and quicker are the better.

Today, Tai Chi is so popular in the west. Some health professionals have regarded Tai Chi as one of the     10     (benefit) forms of exercise.

According to a review of evidence in a medical journal, runners live three years     1    (long) than non-runners. You don't have to run fast or for long    2    (see)the benefit. You may drink, smoke, be overweight and still reduce your risk of     3     (die) early by running. While running regularly can't make you live forever, the review says it     4     (be) more effective at lengthening life    5     walking, cycling or swimming. Two of the authors of the review also made a study published in 2014    6    showed a mere five to 10 minutes A day of running reduced the risk of heart disease and early deaths from all     7    (cause).

The best exercise is one that you enjoy and will do. But otherwise…   it's probably running. To avoid knee pain, you can run on soft surfaces, do exercises to    8    (strength)your leg muscles(肌肉),avoid hills and get good running shoes. Running is cheap, easy and it's always    9    (energy).If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give    10    a try.