He's welcome to come along,....................... he behaves himself.
provided/ if
This situation is very urgent. I’ll call you ................. I have more information.
as soon as
You will feel cold ................... you wear a warm jacket.
unless
................... I die, I’ll leave all my money to charity.
When
............... I see Sam, I’ll give him your message. (I will definitely see Sam)
When
Bees sting.................... they feel threatened.
in case/ provided
I'll talk to the press_______they don't reveal my identity.
if/ provided/ as long as
I’ll respond to your e-mail ................. I can.
as soon as
You're free to do whatever you want _________ you respect the rules.
as long as/ provided
You’ll fail the test ............... you study.
Unless