单词拼写
请根据括号内容提示的中文意思填空，该英文单词的首字母已给出。
I will e__________ （交换）my apple for your orange.
He lent them money for quite a__________ （正当的，恰当的）reasons.
The prisoner a__________ （企图，尝试）an escape, but failed.
Her t__________ （技术） has improved a lot over the past season.
Legal questions rarely exist in the a__________ （抽象）; they are based on real cases.