Question

It was wrong of him to lose his temper ( use ought)

Answer 1

Given sentence is :  It was wrong of  him to lose his temper.  

We have to use "ought" and rewrite the sentence.  "Ought " is a word equivalent to "must".  It emphasizes on compulsion. Something that should be done or not. 

The answer is : 

      He ought not lose his temper.

Answer 2

$\Huge{\textbf{\underline{\underline{Answer;}}}}$

★It was wrong of him to lose his temper .

=>He ought not lose his temper.

$\huge{\textbf{Explanation:}}$

As the question tells that the management done wrong by dismissing him so in order to transform the sentence by using ought we should first know the meaning of $\textbf{"ought "}$

$\large{\textbf {"ought"}}$ is a verb used to indicate duty typically when criticizing someone's actions.

It is equivalent to $\large{\textbf{must.}}$