zero/first conditional

If my sister doesn't study today, she _________ to the concert tomorrow.

• won't go

• goes

• will go

• doesn't go

My mother will buy me a new computer if she ___________ enough money.

• is having

• has

• will have

• doesn't have

The ice _________ if you heat it.

• is melting

• will melt

• melts

• doesn't melt

If you freeze water, it __________ into ice.

• turns

• turn

• would turn

• doesn't turn

They will fly to Canberra if they __________ more money.

• won't have

• will have

• have

• has

If the sun __________, we will go swimming.

• shine

• shines

• won't shine

• will shine

The teacher __________ happy if we forget our homework again.

• won't be

• is

• will be

• be

They __________ longer in Paris unless they find a cheap hotel.

• will stay

• won't stay

• stay

• don't stay

If you wait a minute, I __________ with you.

• comes

• come

• will come

• won't come

When water reaches 100 degrees, it __________.

• boils

• boil

• will boil

• won't boil