----- Nội dung dịch tự động từ ảnh ----- 3 Read the text in the Student Book. Write one word to complete the sentence. V 1 Son Doong is the world's biggest cave. 2 Ho Khanh found the opening of the cave in finally found the cave again. 3 In 2009, some 4 can now visit the cave, but it's not an easy vacation. Unit 5 Reading: a non-hiction text B612 Words in context: Son Doong-The World's Largest Cave
