We’ll never forget the day which my classmates and 76.______ I paid a visit to a chemistry factory last week. 77.______ It was a larger one with nearly 2,000 workers. 78.______ It looked a garden and we could see colorful flowers, grass and trees 79.______ anywhere. We also visited some 80.______ workshops and saw workers worked very hard. We 81.______ talked to them and learned a lot. We understood them further. On 82.______ the way home we felt tiring. 83.______ We all thought that we had a very good day. 84.______ We really hoped that we could get more chances of 85.______ leave the school and learn social experience.