Zero Conditional

If you heat ice, _______

• it melts.

• it will melts.

• melting.

• will be melted.

Ice melts ___________

• if you keep it.

• if you heat it.

• heat it.

• melting.

When it rains, ___________.

• the grass gets wet.

• if the grass wet.

• will get wet

• are going to wet.

If you mix red and blue, _________.

• you are going to make rainbow.

• are going to make rainbow.

• you get purple.

• you like purple.

If you want to come, _________.

• call her.

• called me.

• ask me to go out.

• call me before 5:00.