The children had been playing for the last two hours, but they don’t seem to be tired yet
The children had been playing for the last two hours, but they don’t seem to be tired yet
A. had been playing
B. for
C. but
D. to be
Đáp án A
Had been playing -> have been playingThì hiện tại hoàn thành tiếp diễn diễn tả hành động xảy ra trong quá khứ và kéo dài đến hiện tại