There is still much to discuss. We shall, , return to this issue at our next meeting.
A. however
B. otherwise
C. therefore
D. instead
网友回答
A. however
B. otherwise
(答案→)C. therefore
D. instead
解析：考查连词。句意：还有许多问题要讨论。因此，我们将要在下次会议上回到这个主题。However尽管如此；otherwise否则；therefore因此，所以；instead相反。故C正确。