Исправить ошибки в предложениях: 1. if you will do to london, visit leicester square. 2. i promise i come to the party this weekend. 3. mark are helping me to move flat, on saturday? 4. look out! you're falling over if you are not careful!

1. If you will be in London, visit Leicester Square
2 I promise i will come to the party this weekend.
3. Will Mark help me to move flat, on Saturday?
4. Look out! You will fall over if you wouldn't be careful