Which
waterfall is in Cao Bang? -
A.
Giang Dien Waterfall - B. Ban Gioc Waterfall
B. Ban Gioc Waterfall
Which
of the following wonders is a cave?
- A.
Cuc Phuong - B. Phong Nha
B. Phong Nha
Which
of the following is a national park? - A.
Thong Nhat Park - B. Cat Tien Park
B. Cat Tien Park