阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

May 21st this year marks the first International Tea Day, which was named officially ___41___ the United Nations on November 27th, 2019. To celebrate ___42___ festival, a number of events took place at the Chinese Businessman Museum in Beijing on Thursday.

The chairman of the China Culture Promotion Society ___43___ (address) the opening ceremony. “As a main promoter of the International Tea Day, the birthplace of tea and the ___44___ (large) tea-producing country, China has a ___45___ (responsible)to work with other countries to promote the healthy development of the tea industry. It can help to build a community with a ___46___ (share) future for mankind,” he said.

The “First International Tea Day Tea Road Cooperative Initiative” issued (发布) at the ceremony calls for people working in the tea industry to come together to promote international cooperation ___47___ cultural exchanges. A four-year tea promotion —Tea Road Cooperative Plan—was also issued in accordance with the initiative.

 ___48___ (strengthen)the connection with young people, the event included a number of public promotional activities on social media, ___49___ (invite) twenty-nine tea professionals from around the world to have thirty-six hours of uninterrupted live broadcasts.

The Chinese Ancient Tea Museum was officially unveiled (揭幕) at the ceremony, opening ____50____ (it)first exhibition: The Avenue of Truth—A Special Exhibition of Pu’er Tea.

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