问题补充:
The lamb already. It_ for 2 days.
A. has died , has been dead
B. died, has been dead
C. has been dead, died
D. died , has died
答案:
(答案→)A. has died , has been dead
B. died, has been dead
C. has been dead, died
D. died , has died
解析:在现在完成时中,要用延续性动词,与for+一段时间,die是短暂性动词,必须用be +形容词状态表示延续性,短暂性动词不能与for+一段时间连用,故选A