Present unreal conditional with unless, only if and even if

I would go to my friend's birthday _________ she invited me.

• Even if

• Only if

• Unless

I would study for the math test ________ I was very sleepy.

• Only if

• Even if

• Unless

_______ her cousin had very low self-esteem, she would lie to her.

• Even if

• Only if

• Unless

I wouldn't go to the beach _______ you used all means to convince me.

• unless

• only if

• even if

• if

I wouldn't go on vacation to New York ______ classes ended.

• unless

• only if

• if

• even if