Choose the correct option (a, b or c) to complete the article.
Two young billionaires
Billionaire Alexandra Andresen and her older sister Katharina (1)
[am, is, was, were]born in Norway. When Alexandra was just 19 years old, she became the youngest billionaire in the world. On the same day the information about Katharina's money was (2)
[shared, share, sharing, shares]with the world, she was (3)
[sends, sent, send, sending]500 friend requests on social media.
Both sisters (4)
[am, is, were, was]taught to save their pocket money (5)
[by, with, of, for] their billionaire parents who own an old family business. When they became teenagers and learned to drive, they (6)
[wasn't, weren't, don't, didn't] bought fast sports cars but second-hand ones. They were (7)
[show, shown, showed, shows]not to be proud.
When the sisters were growing up, they were surrounded (8)
[with, of, for, by]animals. Their favourite pony (9)
[weren't, wasn't, don't, didn't]left at home, it (10)
[are, is, were, was]taken with them on holiday. Alexandra became excellent at horse-riding, and she was (11)
[give, gave, giving, given]several prizes for this. When Alexandra was (12)
[ask, asked, asks, asking]about her future, she said she wanted to ride for the rest of her life.
Katharina, however, works in her father's company. She studied global management in London, is interested in sustainability and also helps charities.