閱讀下面短文，在空白處填入1個(gè)適當(dāng)?shù)膯卧~或括號(hào)內(nèi)單詞的正確形式。
    When you hold a cup of tea to drink，many people around the world may be taking part in the same activity as you with different types of tea.
    Today，there are over 60 tea-producing（1）

countries

countries

（country） and regions in the world.With more than 2 billion drinkers across the globe，tea is （2）

the

the

second most popular drink in the world after water.
    Tea，one of the most popular drinks in the world，has（3）

its

its

（it） roots in China.The custom of drinking tea dates back to 3，000 years BC in China.Many famous trading routes were born because（4）

of

of

tea，including the ancient tea-horse route and the ancient tea-boat route.
    Leaving the borders of China，tea（5）

quickly

quickly

（quick） spread to many countries and has since been loved by people all across the globe.
    Tea culture （6）

reflects

reflects

（reflect） how China gets along with the world.It's much like the metaphor （比喻）of tea and beer（7）

which/that

which/that

President Xi Jinping used in his speech in Belgium in 2014，saying "The tea drinker and the beer（8）

lovers

lovers

（love） show two ways of understanding life and （9）

knowing

knowing

（know） the world. " As a symbol of Chinese culture and hospitality，tea is often（10）

used

used

（use） by President Xi in many diplomatic （外交的）activities.