Choose the best answer to complete each sentence

A lot of visitors to Phong Nha-Ke Bang National Park are keen on _____exploration

The city, now in ________ , was an important trading center between the 11th and 15th centuries, and was capital of the Bantu civilization.

The park features well-preserved tropical rain forests and savanna, resulting in a diverse ecosystem consisting of endangered, large mammals.

Barberton Makhonjwa Mountains contain the world’s oldest geological structures and are known to have _________ volcanic and sedimentary rocks estimated to be between 3.6 to 3.25 billion years old.

Trang An - Tam Coc - Bich Dong is famous for its magnificent landscape of ________ (mountain tops surrounded by valleys and steep rocks).

Because of its geological value, Phong Nha- Ke Bang was recognised as a World ________ Site by UNESCO in 2003.

Trees were plentiful and sawmills started appearing on area rivers, producing lumber for settlers.

These remote islands are inhabited only by birds and small animals.