【题目】We did not know you were in trouble at that time, ______we would have given you a hand.
A. otherwise B. however
C. therefore D. though
在线课程【答案】A
【解析】考查连词，根据句意，我们不知道那是你有麻烦，…我们会帮助你，会帮助即实际上没有帮助，用的是虚拟语气，故前后为转折关系，故排除C和D。However用于句中时前后通常都用逗号隔开，otherwise用于句中其前常为逗号，其后直接跟句子内容，故选A。