1. If you *heat* water to 100 degrees Celsius, it *boils*.
2. If the sun *sets*, it *gets* dark.
3. If you *mix* red and blue, you *get* purple.
4. If people *eat* too much, they *gain* weight.
5. If it *rains*, the grass *gets* wet.
6. If you *freeze* water, it *turns* into ice.
7. If you *press* this button, the machine *starts*.
8. If you *drop* something, it *falls*.
9. If you *touch* fire, it *burns*.
10. If the phone *rings*, someone *calls* you.

1. If you *study* hard, you *pass* the exam.
2. If she *wakes* up late, she *misses* the bus.
3. If we *don’t water* plants, they *die*.
4. If the baby *cries*, the mother *comforts* him.
5. If you *turn* off the lights, you *save* electricity.
6. If it *snows*, roads *become* slippery.
7. If I *feel* tired, I *take* a nap.
8. If you *press* this switch, the light *goes* on.
9. If they *arrive* early, we *start* the meeting on time.
10. If the train *is* late, passengers *wait* longer.