My grandfather retired from work last month. He __...
Câu hỏi: My grandfather retired from work last month. He _______ for the same company for 40 years.
A. was working
B. had been working
C. has worked
D. had worked
Câu hỏi trên thuộc đề trắc nghiệm
Đề thi thử THPT QG năm 2018 môn Tiếng Anh - Chuyên Chu Văn An Lạng Sơn