A
1. If it rain, we will stay at home
2. If you don't know the way, i will pick you up
3. My mom will bake a cake if you come to see us
4. They will come to his party if he invites them
5. I will visit my grandparents if i have a long holiday
B
1. If you studied harder , you would get better marks in your test
2. If i were rich, i might travel around the world
3. She would come to the market with us if she didn't have to work
4. We would send a message if we got to the city
5. I would call you back if I arrived at home