-- I don’t know . -- In about ten minutes, I think.
A. when we’ll go back
B. where we’ll go back
C. how often we’ll have a meeting
D. how long we’ll stay here
网友回答
(答案→)A. when we’ll go back
B. where we’ll go back
C. how often we’ll have a meeting
D. how long we’ll stay here
解析：根据下文大约十分钟后，我认为。可知问句是问的与时间有关的问题。故选A。