There is still much to discuss. We shall, , return to the problem next time.
A. however
B. therefore
C. besides
D. anyhow
网友回答
A. however
(答案→)B. therefore
C. besides
D. anyhow
解析：考察副词词义辨析。A然而；B因此；C而且；D无论如何；句意：还有很多需要讨论的内容。因此，下车我们要回到这些问题的讨论上来。根据句意说明B正确。