1.If I visit London, I'll see Big Ben.
2.If it stopped raining, we would go for a walk.
3.If I had not eaten that much, I wouldn't have been felt so awful.
4.If I find his phone number, I'll call him tomorrow.
5.If I leave on time, I'll catch the train.
6. If I found a wallet in the street, I would give it to the policeman.
7.If I had more free time, I would go to the cinema.
8.If I had seen you, I would call you.