Zero
The teacher _______ (speak) loudly if we ______ (make) noise.
Speaks / make
If/it/(rain)/I/(not go)/to the park.
If it rains, I won't go to the park.
If/we/(have)/garden/we/(have)/a cat.
If we had a garden, we would have a cat.
If you ______ (press) this button, the ligths ______ (turn) on.
If you press this button, the lights turn on.
I would buy a new house if I won the lottery.
If/people/(eat)/too much/(get fat).
If people eat too much, they get fat.
If/I/(see)her/I/(tell)her.
If I see her, I will tell her.
I/(not worry)/if/I (be)/you
I wouldn't worry if I were you.
When I go shopping, I don't buy plastic bags.
I will ask John this question if I meet him at school.
If/babies/(be hungry)/(cry)
If babies are hungry, they cry.
If/I/(study)today/I/(go)/party/tonight.
If I study today, I'll go to the party tonight.
If I _________ (dring) 100 cups of coffee, I ______ (not be) able to sleep.
If I drank 100 cups of coffee, I wouldn't be able to sleep.
My brother ______ (wash) his car this afternoon if he _______ (have) enough time.
will wash / has
If I _______ (not know) you, I ________ (think) you're crazy.
If I didn't know you, I would think you're crazy.
If/(combine)/red and blue/(get)/purple
If you combine red and blue, you get purple.
If I ______ (have) enough money, I ______ (buy) a new pair of shoes.
If I have enough money, I'll buy a new pair of shoes.
You ______ (go) to the party if you ______ (be) 21 years old.
You would go to the party if you were 21 years old.
If Anna ______ (leave) early, she _______ (not be) late for school tomorrow.
If Anna leaves early, she won't be late for school tomorrow.
If it _______ (rain) this afternoon, we ______ (take) the car.
Rains / will take
If water _______ (reach) 100°C, it ______ (boil)
If water reaches 100°C, it boils.
James ______ (borrow) some books if he ______ (go) to the library.
James will borrow some books if he goes to the library.
If it snowed in August, would you be surprised?
If a house ______ (have) solar panels, it _______ (produce) its own energy.
If a house has solar panels, it produces its own energy.
I ______ (tell) Luis about the party if I ______ (see) him at lunchtime.
will tell / see