what kinds of volunteers do you want to be 和 what kind of volunteer do you want to be 用哪个?
问题描述：
what kinds of volunteers do you want to be 和 what kind of volunteer do you want to be 用哪个?
答
一般都是用单数what kind of volunteer do you want to be
回答只需要描述自己希望成为怎样的志愿者的就好了