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Câu hỏi: Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
John has been working as a journalist since he________.from university in 2000.
A. graduate
B. graduated
C. will be graduate
D. had graduated
John has been working as a journalist since he________.from university in 2000.
A. graduate
B. graduated
C. will be graduate
D. had graduated
Sau since + quá khứ đơn
Đáp án B.