We didn’t know you were in trouble at that time; we would have given you a hand.
A. otherwise
B. therefore
C. yet
D. however
网友回答
(答案→)A. otherwise
B. therefore
C. yet
D. however
解析：考查词义辨析，otherwise 否则，therefore 因此，yet 还，however然而，句意：我们不知道你当时处于困境中，否则的话我们会帮助你的。所以选A。