their disagreement还是their disagreements

their disagreement还是their disagreements ___to settle their disagreements at the conference table,the their bodies还是their body? their parents还是their parent their Try their best 还是Try their bests? in their lives还是in their life change their minds还是change their mind? in their opinion还是 in their opinions? on their way还是 on their ways? on their own还是on their owns 是Theirselves 还是their selves?