Câu hỏi: Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.
We are very happy as we ___________ for this opportunity for more than three years.
A. were waiting
B. have been waiting
C. waited
D. are waiting
We are very happy as we ___________ for this opportunity for more than three years.
A. were waiting
B. have been waiting
C. waited
D. are waiting
For more than three years là dấu hiệu của thời hiện tại hoàn thành tiếp diễn
Đáp án B.