If he cheats on her, they break up.

If she has drifted apart, she hasn't fallen in love with you.

If you don't want to finish with her, you must make up for your mistake.

If people run out of resources, they will dawn on about pollution.

If I make up my mind been green, I'll throw away the garbage every day.

If you give up recycling, you should find out another way to ge green.

If I didn't put up with the noise, I would blow up and honk too.

If they went back to that slum, they couldn't run away again.

If I refrained from using my cellphone for a long time and studied more, I wouldn't burst into tears when I get low marks.

If he had started over the essay yesterday, he would has ended it up already.

If you hadn't dropped out of school, you would haven't gone through economic hardships.

If I hadn't slipped out of classes in high school, I would have gone into medical school.