Read the passage and circle the best answer A, B, C or D. The leaning tower of Pisa is one of the most famous (20) ________ in the world. It is famous not because of its beauty or size, but (21) ________ it leans dangerously to one side. Each year the tower attracts thousands of (22) ________ from all around the world. (23) ________ the tower leans to the south and also curves towards the north. It is said that the tower has leaned more than 17 feet. Over the past years, various proposals (24) ________ been made to stop the tower from leaning (25) ________ and to prevent its collapse. Some people would like to pull it down and rebuild it (26) ________ stronger foundations. Others have suggested poring (27) ________ around the base of the tower to stop it from leaning further. If nothing (28) ________ done, the tower might collapse very soon. But until it is rebuilt or straightened, it will remain as one of the most fascinating (29) ________ mistakes in the world. Question 20: A. buildings B. cities C. towns D. schools Question 21: A. nevertheless B. because C. for D. when Question 22: A. visitors B. flies C. dollars D. birds Question 23: A. Tomorrow B. Sometimes C. Yesterday D. Today Question 24: A. had B. have C. will D. are Question 25: A. downloads B. much C. westwards D. further Question 26: A. on B. under C. in D. around Question 27: A. water B. straw C. concrete D. ropes Question 28: A. will B. is C. was D. become Question 29: A. biological B. artistic C. literary D. architectural giúp mình với hy vọng đúng hết mình vote 5sao+trả lời hay nhất+cảm ơn