I went to the Summer Palace last week. At the gate
I happened to meet some American tourists. I greeted to        76. ________
them in English and then we began to chat. I got know          77. ________
that they were college students travel in China. Most of       78. ________
them were fond of Chinese medicine. They are busy taking       79. ________
pictures and were much impressing with the changes that        80. ________
had been taken place in the past few years as well. After      81. ________
that, we went boating on a lake and having a good time.        82. ________
We exchanged our email address so that we could write to       83. ________
each other in future. They thanked us again and again. I       84. ________
was very glad to have a chance to practicing my oral English.  85. ________

76. to 去掉            77. got 后加上to                   78. travel 改为 traveling
79. are 改为 were      80. impressing 改为 impressed      81. been 去掉

82. having 改为 had    83. address 改为 addresses         84. us 改为 me