The news came as no surprise to me. I…………..for some time that the factory was likely to close.

The news came as no surprise to me. I…………..for some time that the factory was likely to close.

A. knew

B. had known

C. have existed

D. exist
Xem đáp án
B là đáp án đúng
Lời giải:
Thì quá khứ hoàn thành.