假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（＼）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1).每处错误及其修改均仅限一词。
2).只允许修改10处，多者（从第11处起）不计分。
On December 10th last year, we paid a visit of a high-tech agricultural garden. It took us one and a half hour to get there. The natural environment there was very pleased, and we could breathe fresh air. The intelligent glass greenhouse, where many kinds of fruits and vegetables were growing there, was really amazing. Though it was very cold outside, the greenhouse controlling by a computer could provide a proper temperature. That was also very interesting to be surrounded with different plants. We could see so many colorful fruits and vegetables in the greenhouse where all of us have never seen before. Luckily, we allowed to taste some of the fruits and vegetables. We really had the good time and learned a lot from the visit.
