Choose the options that best complete the passage.Sơn Đoòng Cave Sơn Đoòng Cave is (36)___________...Đoạn văn36/45Sơn Đoòng Cave is (36)___________ at the heart of Phong Nha Kẻ Bàng National Park in Quảng Bình Province. to be locatedlocatingbeing locatedlocatedGiải thíchChọn D