1........has a lots of beautiful lakes 2.....................its air is fresh 3............is bigger than Ha Noi, and Ho Chi Minh city is bigger than Da Nang 4.........isn't any desert in our country 5.....is the tallest student in class 6..........isn't more interesting than watching TV 7............... is located near the foot of the mountain 8.........is a MR.Hung's student 9...............remember to do your homework 10.............behind Quang VII. 1.Phong Nha-Ke Bang is in the Bo Trach and Minh Hoa Districts of central Quang Binh province. 2.it's famous for its cave sistems. 3.travelers should take a boat ride through underground rivers to experience nature and enjoy fresh air. 4.There are 300 caves in Phong Nha-Ke Bang. 5.Not yet. 6.yes,I do.Because I want to explore it.