Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

John ____ for the government since he graduated from Harvard University. Until recently, he ____ his work, but now he is talking about retiring.

• A. A. has been working - has not enjoyed
• B. B. has writing - has been finishing
• C. C. has worked - has been enjoying
• D. D. has worked - have enjoyed

Tạm dịch: John đã làm việc cho chính phủ kể từ khi tốt nghiệp đại học Havard. Cho tới gần đây, ông vẫn thích công việc của mình. Nhưng giờ ông đang nghĩ tới việc nghỉ hưu.
A: has not enjoyed không hợp về nghĩa
B. has writing không hợp về nghĩa
C. phù hợp
D. have enjoyed không hòa hợp với chủ ngữ
=> C