What led you to believe I was ill？（英译中)

We have reason to believe that he was murdered.（英译中)

You can imagine how surprised I was.（英译中)

You have no idea how worried I was.（英译中)

I see what you mean.（英译中)

I was too tired to walk any further.（英译中)

What a fool I was to believe he is a good man.（英译中)