FROM THE PASSAGE, WE KNOW THAT ______.A. THERE IS A STREET INSIDE...

27. From the passage, we know that ______.A. there is a street inside Son Doong CaveB. the cave is always covered with rain waterC. few tourists want to come to the caveD. tourists need permission to explore the caveChoose the underlined word or phrase (A, B, C or D) that needs correcting.