ĐỀ THI GỒM 80 CÂU (TỪ QUESTION 1 ĐẾN QUESTION 80) Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions. Question 1: We couldn’t fly ______ because all the tickets had been sold out. A. economics B. economy C. economical D. economic Question 2: “Buy me a newspaper on your way back, ______?