1.The caves in Trang An(Ninh Binh) are more wonderful than the acves in Ha Long Bay.(so sánh hơn)
2.Now,Ho Chi Minh City is the largest city in Viet Nam.(so sánh nhất)
3.Is Hai Phong more exciting than Da Nang city?(so sánh hơn)
4.I think the seafood in Nha Trang is the cheapest in Viet Nam.( so sánh nhất)