responsible本题询问该项目的工作内容。录音中的promoting sustainable是题目中的原词复现。该项目的工作内容是推广可持续的(sustainable)、可靠的(responsible)农耕方式，故空格处填入responsible。

Now I’m going to tell you about some of the more popular opportunities in a bit more detail. One of the most popular volunteering choices is teaching. You’ll find a warm welcome awaits you from our students around the world. The main thing you will do is assisting with English conver-sation because although the local teachers are very capable of teaching the structural aspects of the English language — such as the grammar — they do not use the correct intonation or pronunciation, because they lack the confidence of a native speaker. By providing conversational English training, you can greatly enhance the learning experience of thousands of children and adults with whom we work in the developing world.
You can also volunteer in agriculture and farming. Access to safe and healthy food is a major concern of any society. Volunteers work on a farm with the aim of promoting sustainable local food sources and responsible farming. Using pesticides and other destructive agricultural techniques can have a long-term negative impact on the environment and threaten the future well-being of whole regions. Time Abroad’s agriculture & farming projects focus on organic farming practices and educating local communities on their benefits. You could also volunteer in the field of veterinary medicine. If you do this you will be working alongside a vet in a local veterinary practice. You will help the vet when people bring in sick animals or join the vet on visits to people’s houses or other places. You will gain fantastic insight that would not be possible in your own country. You are likely to see many exciting types of animals like snakes, big cats or even elephants! And you will develop a better understanding of the problems people are faced with in both urban and rural areas of the third world.
So, I hope that has helped you to learn a bit more about Time Abroad.  Does anybody have any questions?