zero conditional

If you heat ice, ......

• it melts.

• it melted.

If it rains, ........

• you will grow.

• the grass gets wet.

If you mix red and blue, ..........

• purple.

• you get purple.

If plants don't get enough water, .........

• they die.

• they are dying.

If you want to come, .......

• call me before 5:00.

• called me before 5:00.

If you drink a glass of milk before you go to bed, ...........

• you slept well.

• you sleep well.

If you put water in the freezer, ..........

• it melts.

• it becomes ice.