Complete the sentences using the 1st Conditional.

If you (squeeze) a grapefruit, you (get) some grapefruit juice.
You (put on) much more weight if you (continue) eating pastry.
If I (study) a lot, I (get) an “A” in Math.
If you (press) that button, the washing machine (stop). But it can lock-up.
If you (not apologize), Mary (not forgive) you.
If you (dust) the rooms today, I (do the dishes).
What (happen) if I (press) that button?
If there (not be) clean water, people and animals (die).
If we (not recycle) waste, our planet (be) even more polluted.
It (be) broken if you (press) it too tight.
If you (touch) my cat, it (scratch) you.
There (be) traffic jams if it (snow).
You (see) the Trafalgar Square if you (visit) London.
If you (speak) louder, Grandpa (hear) you.
I (give) you a sweet if you (behave).