0 and 1st conditionals

If the temperature is 0°C,

• it will snow

• it snows

If you heat water to 100°C,

• It boils

• It will boil

If he needs help, he

• calls

• will call

If I don't go to bed early, I

• will be tired

• am tired

If I study regularly, I

• will pass my year

• pass my year

If the sun goes down,

• will get dark

• gets dark