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.
By the end of the month, I___________for this firm for a year.
A. will work
B. will have been working
C. will be working
D. work
By the end of the month, I___________for this firm for a year.
A. will work
B. will have been working
C. will be working
D. work
By the end of the month ...will have been working...
Đáp án B.