1.there will be a exam tomorrow
there will be a happy summer vocation if you pass the exam
there will be a happy ending
2 there is a girl in the car
there are three dogs in the park
there are many books in the classroom
3 If I were you,I would cry in my room.
If it hadn't rained,I would have played soccer.
If it hadn't rained,I would have been playing soccer
4 I'm able to pass the exam
he's able to swim himself
they are able to arrive on time
5 i'm going to be a teacher
he's going to go to the park
she's going to study