The young boy has come to himself in hospital now. But he unconscious for three days.A. h

问题补充：

The young boy has come to himself in hospital now. But he unconscious for three days.

A. has been

B. was

C. had been

D. is

答案：

A. has been

(答案→)B. was

C. had been

D. is

解析：句意：这个小男孩现在在医院苏醒了，但是他有三天失去意识。从前面的句子，说明他失去意识是过去的事情，所以用一般过去式，选B。