At that very moment my mind went pletely and I forgot what I was supposed to be doing.
A. efficient
B. blank
C. shallow
D. abundant
网友回答
A. efficient
(答案→)B. blank
C. shallow
D. abundant
解析：考查形容词辨析。句意：就在那时，我大脑一片空白，忘记我应该做什么事情了。A有效率的；B空白的，茫然的；C浅的，肤浅的；D丰富的。go blank大脑空白，故选B。