We will be hungry if we don't have any foods.
We will be hungry if we don't have any FOOD.
I will laugh if you say me a joke.
I will laugh if you TELL me a joke.
They won't buy a new car because he doesn't have money.
They won't buy a new car because THEY DON'T have money.
The glass will break if you don't be careful.
The glass will break if you AREN'T careful.
We will be hungry if we eat enough now.
We will be hungry if we DON'T eat enough now.
If the phone rings, I will happy.
If the phone rings, I will BE happy.
If our exam isn't tomorrow, it will is the next week.
If our exam isn't tomorrow, it will BE next week.
He will be hungry if you not cook.
He will be hungry if you DON'T cook.
I'll give you ten dollars if you make my homework.
I'll give you ten dollars if you DO my homework.
I will laugh if I hear a funny history.
I will laugh if I hear a funny STORY.
The glass will break if you hit.
The glass will break if you hit IT.