阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式（不超过3个单词）。
My friend had a chance to make a trip to Hong Kong           August 15,2015. He had dreamed about      (visit) it since his boyhood and it was the first time that he         (be) there. The following was ______he had seen.
    (arrive) there, he was       (shock) by its beautiful scenery and tall buildings.        ___we all know, Hong Kong has the most skyscrapers in the world. Wherever he went, he saw many smiling faces. People in Hong Kong were kind, generous, easygoing and ready to help others. Much to his surprise, he saw that people there always kept order in public places.        __    a great number of people were waiting for the next train at the subway station, they were talking in such a low voice as not to disturb others.
Chinese and English are the official languages of Hong Kong. English is        (wide) used in governments, markets, service centers and other fields.
Staying there for a week was a good experience for him ，         he would never forget.