Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.
The situation seems to be changing minute by minute.
A. from time to time
B. time after time
C. again and again
D. very rapidly
Đáp án D
Giải thích
Rapid (adj): Nhanh chóng