First conditional

Sophia was in a trouble years ago. Now, she can do her activity even better. Someone she doesn’t know helped her. _______ he help her, she won’t survive.

• if

• unless

I haven’t met Romario for weeks. I know he has a promise to you. _______ I meet him, I’ll tell him the whole truth.

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Going on a diet isn’t enough. _______ you exercise regularly, you won’t be able to lose some weight.

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Spending time with the family is always fun but you can’t go on vacations ______ you don’t save some money.

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Being in shape isn’t easy. You have to work hard. Instead of avoiding junk food you need some exercise. ______ you do it regularly, you’ll get what you want.

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The campsite on the mountain slope is amazing. People will enjoy different atmosphere and its air. Someone will feel extremely cold all day ______ he wears a warm jacket.

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I am at work from 9 to 5. Please don’t ring me ______ it’s urgent.

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There’s a new rule in our company during this pandemics. Although it’s hard, we will do it. We won’t pay our suppliers _______ they don’t send the goods before Fridays.

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I already had a plan. Me and my friends will go for a bike ride _______ it rains.

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I hear that you’ll have a party next month. Inviting old friends will be fun. Don’t forget calling Sammy. He won’t come ______ you invite him personally.

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• unless