Đọc và góp ý giúp mình với (cách dùng từ, câu, nội dung...) *Đề: Your foreigner friend is going to travel to Vietnam next summer. Write an email to give him/her a suggestion about one place to visit. Dear Susan, How are you? I have received your letter and I feel so glad when knowing that you are going to travel to my country. There are many wonders that you have to visit in my country but I suggest that you should travel to Phong Nha-Ke Bang national park because it's suitable for people who like exploring like you. It will be so wonderful if you travel it in April or May.It is located in the centre of Quang Binh province in north-central Viet Nam. It is famous for its cave system. It is considered as one of the two largest limestone mountains in the world.This national park is recognized as a World Natural Heritage by UNESCO in 2015. There are many interesting activities to do but I just suggest three activities which attract most of tourist coming here. Firstly, you can travel on a boat driven by the locals along the Son river and into the cave.It is an enjoyable experience that you will have opportunity to see nature surrounding the cave, enjoy the fresh and cool air and enjoy the beauty of the special structure of the cave with the rare stalactites. Secondly, you can visit the Thien Duong Cave which is known as the "Imperial Palace in the ground" with colossal stalagmites and glimmering stalactites.Thirdly,you can... (trải nghiệm) the cultural features of Phong Nha-Ke Bang national park with many interesting activities: visiting trditional villages by bicycle, making hats, making pancakes, brewing mine by yourself with local people.In short, I believe that it will be a fantastic trip and I'm sure it won't let you down. I'm looking forward to hearing from you. Love, Ngoc