1.She hurt her head when she fell off her scooter.she _____________ worn a helmet.
2. She's really good player. if she'd entered the race,she ____________ won it.
3.the people __________came to visit us were really nice.
4.Riace is a small village in Calabria __________is a beautiful region of Italy.
5.He__________stopped the accident. He has too late.
6.He ___________been here recently, the kettle’s stil warm.