A) 1.If it doesn't snow. It will rain.
    2.When they finish their job, they will go to cafe.
    3.When we learn the poem, we will go to the museum.
    4.If we go to the cinema, we will watch a drama.
    5.If the weather is fine, I will go out with my friends.
b)  1.If the weather is fine, I will go shopping.
     2.If her money is enough she will book a ticket.
     3.If there's no one at home they will eat pancakes with caviar.
     4.If he is good at science. He will explore the new land.
     5.If the teacher is satisfied they will continue their work.