Mark the letter A, B, C or D o...

Câu hỏi: Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

A. It has been 10 years when I have heard this song

B. It was 10 years since I last heard this song

C. It is 10 years since I last heard this song

D. It is 10 years when I have heard this song