Choose the best answer A, B, C or D to complete the sentence. Question 9. What __________________ if you saw a UFO? A: did you do B: will you do C: would you do D: do you do Choose the best answer A, B, C or D to complete the sentence. Question 12. He asked me what the conservationists __________ so far to protect our environment. A: had done B: have done C: do D: did Choose the best answer A, B, C or D to complete the sentence. Question 8. He was the first man _______________ to help the flood victims. A: arrived B: to arrive C: arriving D: arrive Trả lời sai 17 Choose the word whose stressed pattern is pronounced differently from the others. A: immature B: negative C: nationality D: creativity Trả lời sai 18 Choose the best answer A, B, C or D to complete the sentence. Question 11. Alexander Graham Bell was a great___________, who invented the telephone. A: scientist B: explorer C: conservationist D: developer Trả lời sai 19 Choose the word whose stressed pattern is pronounced differently from the others. A: allowance B: pollution C: computer D: currency Choose the underlined part A, B, C or D that needs correcting. Picture 5 A: A B: B C: C D: D