New Zealand is becoming an increasingly popular destination for overseas visitors. It attracts tourists and people on business, but the vast majority come as students.

'It' refers to ______

It attracts tourists and people on business, but the vast majority come as students. Mostly from Asian countries, they stay for anything from a few weeks to a few years or more, studying at language schools, colleges and universities.

'They' refers to _________.

New Zealand can offer good homestay accommodation, a clean and beautiful environment and a reasonable cost of tuition. These factors attract an ever-increasing number of overseas students, accounting for millions of dollars in revenue for New Zealand.

'These factors' refers to ____________.