Don’t discuss the probiems with your partner unless you——to do soA ask B are asked 为什么选A

Don’t discuss the probiems with your partner unless you——to do soA ask B are asked 为什么选A
Don’t discuss the probiems with your partner unless you——to do so
A ask B are asked 为什么选A

Don’t discuss the probiems with your partner unless you——to do soA ask B are asked 为什么选A
应该选择B吧.怎么会是A呢?
意思：不要跟搭档争论问题,除非你被要求去这样做.