Question : Choose the correct option to be filled in the blank given
I don't want you to give that number to anyone ______, it's an emergency, you understand?
Option 1: As
Option 2: if
Option 3: Unless
Option 4: Lest
Correct Answer: Unless
Solution : The correct answer is option 3.
Explanation:
The word "unless" is a conjunction that means "except if."
Unless it is a subordinate clause, the clause that follows needs a main clause to form a full sentence.
We use a comma when the word unless appears before the main phrase.
We employ the present tense after unless we are referring to the future.