The whole family were sound asleep when the disaster .
A. had taken place
B. took place
C. is taking place
D. has taken place
网友回答
A. had taken place
(答案→)B. took place
C. is taking place
D. has taken place
解析：考察时态。句意：当灾难发生的时候，全家人都在熟睡。根据说明是在灾难发生这一过去的时间所发生的事情，故使用一般过去时。故B正确。