Ответ:
Is Katie going to stay on a campsite? No,she isn`t.
Are Joe and Max going to visit the Colosseum? No,they aren`t.
Is Katie going to visit the Trevi Fountain? Yes,she is.
What are Joe and Max going to do? They are going to go to the beach and swim.
How is Katie going to travel? She is going to travel by plane.
Are Joe and Max going to take a guidebook? No, they aren`t.