Choose the correct form

How do you usually spend your holidays? What do you prefer? Staying at home or travelling? Have you ... ridden a quad bike? A lot of people like spending their holidays in the country. My parents have ... travelled in a camper van. They have ... to Africa this summer. They have
... an elephant. My grandparents have ... across the country. My uncle has ... on a yacht. My best friend and his parents have visited Sidney. They have ... over it in a helicopter and have ... sightseeing on an open-top double-decker bus. I think that all these activities are amazing. My dad ... bought a quad bike. Riding a quad bike is my favourite activity.