AS LONG AS, PROVIDING (THAT), UNLESS

You can use these expressions that are used instead of IF in a conditional sentence. 

 Check this out:

https://www.instagram.com/p/C31mw3Guc__/?igsh=ODM3azhnd3hncTR0 

And then, practice with the following exercises:

https://www.usingenglish.com/quizzes/23.html

https://www.englishgrammar.org/exercise-4/

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-35956.php

https://www.usingenglish.com/quizzes/496.html

https://www.englishgrammar.org/providing-long-exercise/

https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-3825.php