We have every reason to cancel the contract because you've failed to fulfil your part of it.
我们完全有理由取消合同,因为你们没有完成应遵守的合同内容,履行合同。
the first group began to show some personality disorders while the others seemed more or less unaffected.
结果,第一组人开始出现性格失常,而第二组人似乎没受什么影响。