Complete the time-traveler's survival guide by matching the correct actions to the scenarios. Pay close attention to the second half of each sentence!

If you press the red button now, the time machine will launch us into the future. If a dinosaur chased you, you would need to run very fast! If we had packed more snacks, we wouldn't have gone hungry in the Jurassic period.

If you press the red button now, the time machine will launch us into the future.

The main clause uses "will launch" (First Conditional), so the "if" clause needs the present simple tense ("press") for a possible future action.

If a dinosaur chased you, you would need to run very fast!

The main clause uses "would need" (Second Conditional), so the "if" clause requires the past simple tense ("chased") for a hypothetical or unlikely situation.

If we had packed more snacks, we wouldn't have gone hungry in the Jurassic period.

The main clause uses "wouldn't have gone" (Third Conditional), so the "if" clause must use the past perfect tense ("had packed") to describe an unreal past condition.