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