Question

We didn’t know you were in trouble at that time, _______ we would have given you a hand.

A．therefore

B．unless

C．otherwise

D．so

Answer 1

C

试题分析：句意，我们不知道你在那个时候有困难，不然我们就会帮助你。therefore 因此 unless 除非 otherwise 否则 so 因此，根据题目意思，故选 C，
点评：解答此类题型首先要确定上下文关系,根据前后文关系确定适当连词，一定要把题干看完整，不可断章取义。