1.
If it rains, we will stay at home.
If you do not know the way, I will pick you up.
My mum will bake a cake if you come to see us.
2.
If you studied harder, you would get better marks in your tests.
If I were rich, I would travel around the world.
She would come to the market with us if she did not have to work.
3.
If you had helped us, we would have finished the work in next to no time.
I would have called you earlier if I had not lost your phone number.
They would not have gone to the theatre by car if the weather had been better.