If water *reaches* (reach) 100 degrees Celsius, it boils.

When you mix blue and yellow, you *get* (get) green.

If you press this button, the machine *starts* (start).

Ice *melts* (melt) if you heat it.

When cats are happy, they often *purr* (purr).

If you multiply six by nine, you *get* (get) fifty-four.

Plants *die* (die) if they don’t get enough water.

If I *eat* (eat) peanuts, my throat swells up.

When the sun goes down, it *gets* (get) dark.

If you *cut* (cut) onions, your eyes might water.

Whenever he *calls* (call), I always answer.

If you touch a fire, it *burns* (burn).

When it rains, the grass *gets* (get) wet.

If it *snows* (snow) in the desert, it’s unusual.

When you *drop* (drop) an apple, it falls to the ground.

Zero Conditional -harjoitus 2

When you *boil* (boil) water, it turns to steam.

If he *sleeps* (sleep) late, he misses his alarm.

When the weather *gets* (get) cold, the leaves fall off the trees.

If you don’t water flowers, they *wither* (wither).

When you *add* (add) sugar to tea, it becomes sweet.

If dogs are scared, they often *bark* (bark).

When the wind *blows* (blow), the leaves move.

If you *push* (push) that door, it opens.

When my phone *rings* (ring), I usually answer it.

If you *freeze* (freeze) water, it becomes ice.

Whenever she *drinks* (drink) coffee late, she can’t sleep.

Silver *tarnishes* (tarnish) if it’s exposed to air.

When you *speak* (speak) to him in English, he understands.

If it *rains* (rain) a lot, the river level rises.

When you *swim* (swim) in the sea, you need to be careful of currents.