First conditional 1 Choose the correct option. 1 If you don't pick up/won't pick up your litter, I'll have to do it for you.

1. If you **don't pick up** your litter, I'll have to do it for you. *Explanation:* The first conditional uses 'if + present simple, will + infinitive'. Since we have 'if', we need to use the present simple form 'don't pick up'.