Các anh chị giúp em với ạ ----- Nội dung dịch tự động từ ảnh ----- Mark the letter A, B, C, or D on your answer sheet to show the underlined, part that needs correction. Question 46: The vacuum tube did an important contribution to the early growth of B A C D radio and television. Question 47: When we eventually arrived almost three hours late, the platform was A B C in completely darkness D Question 48: Usually the climate in mountainous areas becomes much windy at higher A B C D altitudes. Question 49: The value of the dollar declines as the rate of inflation raises. B C D A- Question 50: Every country has their own traditions, some of which have existed for centuries. D A B C
