If i (to see ) a ghost , i would scream . ( как только она придет ), you'll be under the spell of her fascination . if i (to be ) you ,i would go in for sports . i (to buy ) a pet for my son , if he takes good care of it .

If I saw a ghost, I would scream.
As soon as she comes, you'll be under the spell of her fascination.
If I were you, I would go in for sports.
I will buy a pet for my son, if he takes good care of it.