Choose the correct answer to fill in each of the blanks in the passage.
Technology has impacted almost every aspect of life today, and education is no exception. For one, technology has greatly expanded access to education. In the past, books were rare and very (15) __________ people had access to educational opportunities. Today, (16) __________ massive amounts of information (books, audio, images, videos) are available at one's fingertips through the Internet, and opportunities for formal learning are available online worldwide.
Opportunities for communication and collaboration have also been expanded by technology. (17) __________, classrooms have been relatively isolated, and collaboration has been limited to other students in the same classroom. Today, students can (18) __________ what they are learning with students in other classrooms in other states. Students (19) __________ on group projects using technology-based tools such as wikis and Google docs. The walls of the classrooms are no longer a barrier (20) __________ technology enables new ways of learning, communicating, and working collaboratively.
