Проверьте пожалуйста 4 предложения правильно ли они составлены? 1 if i found a wallet in the…

1 If I found a wallet in the street, I would look for the owner.2 If I saw a UFO in the park, I would remove it on video.3 If I were your friend, I would ring you every day.4 If I lost my way in a city, I would look at a card.5 If I saw a big dog, I would strike it.