International Student Volunteers (IV) is a California-based nonprofit volunteer organization. Since 2002, more than 35,000 students have joined ISV to volunteer and make a difference during their summer break One of ISV's programs, High School Program (HSP), combining volunteer work and adventure travel, is an 18-day program for high school students aged 15-18. Since its first launch in 2007 in Australia for the first time, HP has provided opportunities for students to make a difference to communities and those in need while learning about responsibility and global issues. Each group of students is led by a seasoned IV leader, and accompanied by a High School leader (either teacher or coach) throughout their trip. HSP's regional staff are available to provide timely help. Students can live, travel and learn in a fun environment. There are a lot of activities that build good characters and inspire students to contribute their efforts and time to communities. For a couple of days, students can visit local areas and learn about their cultures or difficulties faced by local people. For the other days, they can join adventure activities to step out of their comfort zone and challenge themselves. High school students can now choose among three countries - Costa Rica, Dominican Republic or Thailand to spend their trip. HSP intends to expand their network to other countries. If you're a high school student, give it a shot! 29. In High School Program, what activities can students take part in? A. learn about local people's cultures or difficulties B. join adventure activities C. all are correct D. visit local areas