1.It's my turn. don't try to sidetrack me .这是我的事，你别转移话题。

2.Do you mean that it's none of my business ?你以为它跟我毫无关系吗？3.It's simply thisthe fancy struck me .就是这么回事，一时心血来潮。

4.It's very natural that he should be thirsty .他觉得口渴是很自然的。