Помогите составить 5 предложений по этой формуле

If+had+V3, would have+V3

If I had had some chances, I would have won

if I had won the lottery, I would bought a new bike

if I had been to London, I would have visited the " Big Ban"

if they had trained hardly, they would have won the prize

if she had prepared more, she would have got good mark