从方框中选择合适的单词，并用其适当形式填空

                             vacation   stay   hike  visit   back  friend   sightsee   plan   send   with

    Tony is always busy at work. But next month he is taking a long ____ Heis going to China with his family. They are going to the Great Wall and the Palace Museum. They are ____ there for two weeks. They have some Chinese ____there, and they are also ____ them. Then they are going ____ and enjoying the beautiful parks there. They are ____ to stay there for aweek. Next they are going to Mount Emei in Sichuan. They are going____ inthe mountains. They will ____ their friends some postcards during the vocation. Then they are going____ to New York. After the vacation they will have to go on ____ the busy work.