Read the following advertisement about Ha Long Bay and choose the letter A, B, C, or D to indicate the correct option that best fits each of the numbered blanks

Visit Ha Long Bay, a stunning place with green water and amazing rock formations! Explore ___(1)___ caves, kayak on calm water, and watch colorful sunsets. You can also ___(2)___ delicious seafood and learn about local villages. Ha Long Bay is a UNESCO World Heritage ___(3)___, perfect for a relaxing adventure in nature. Come and make unforgettable memories!