Alternatives to " if '' in Conditionals

Don't call the police ...  it's strictly necessary.

The exam was too difficult. I wouldn't have passed ...  I had studied harder.

... you could spend 15$ every hour. How much could you spend in a year?

I'll talk to the press ...  they don't reveal my identity.

You should stop drinking ...  you have an addiction problem. Alcohol is just not healthy.

We should take a jacket ...  it's cold when we arrive.

I don't mind how you spend the money ...  you stick to the budget.

Bees sting ...  they feel threatened.

...  you say sorry a thousand times, you can't change what you've done.

You're free to do whatever you want ...  you respect the rules.