Running helps you keep fit and a pair of good running shoes （1）

is

is

（be） what you need.That's why millions （2）

of

of

people run several days a week and （3）

regularly

regularly

（regular） take part in races.Travis Snyder from the US had been thinking about an idea for a fun run where professional athletes and amateurs （業(yè)余愛好者） could run together.In 2012，the first Colour Run was organized， ——（4）

the

the

happiest 5 K throughout the world.It started with 6，000 runners in Phoenix，Arizona，and now it （5）

is held

is held

（hold） every year in many cities throughout the world，with millions of runners.The idea is simple：you start wearing something white，and at every kilometer people spray （噴） and paint you in different （6）

colours / colors

colours / colors

（colour）.The reason （7）

why

why

people go on a Colour Run is that it's healthy，fun and colourful.
    Besides，running，doing Tai Chi is a good way （8）

to keep

to keep

（keep） healthy as well.In many parks of China you can see big groups of people，the elderly in particular，doing Tai Chi — slow，controlled movements of the arms and legs，which are （9）

beneficial

beneficial

（benefit） to health.They help to reduce stress，and people doing Tai Chi have a tendency to concentrate better and feel happy and （10）

relaxed

relaxed

（relax）.