Add the prefix -in or -im to each word below. Complete the sentences using the modified words.

Write one word in each gap.

consistency, propriety, security, competence

Alan's [ ] made other people think he was shy and cowardly.

The teacher gave Jane a bad mark because of the [ ] in her presentation.

It was clear that the [ ] of his behaviour was not acceptable in a decent society.

The [ ] of the employee led to numerous mistakes in the project.