"Mom!" I cry, running into my house. "What is it, Isa?" my mother asks, sounding alarmed. "Phineas and Ferb invited me to go to Paris with them! Can I go? Please please please please please?! PLEASE?" "What?" my mother asks, puzzled. I quickly start to explain the story. "See, I went over to Phineas and Ferb's house today. For once, they weren't in their backyard-- well, actually, they were, but they were just making a huge Eiffel Tower out of Popsicle sticks --and I asked what made them want to build an Eiffel Tower, and Phineas said his parents were booking a trip to Paris and to ask you if I could come!" "Isa..." my mom says. "I don't want you going to Paris just with them." "No, it's fine!" I say. "Candace and their parents are coming too! Can I go? Please please please?!" "Well," my m