You … save a file before you close it, or you will lose it. 

You … relax after a hard day at work.

He … ask for permission if I want to leave earlier.

Visitors from the European Union … have a visa to enter Ireland. 

If a candidate … (prepare) for an interview, they perform better.

If I … (know) more about app development, I would have created one earlier.

If she had completed her certification, she … (land) that IT job.

If the startup … (receive) funding, it would have launched last year.

If you ask questions during an interview, it … (show) your interest.

If a developer … (finish) the code on time, we will meet the project deadline.