Образуйте условные предложения. 1. The travellers had no camera with them, so they could not take photos of the beatiful

1. The travellers had no camera with them, so they could not take photos of the beautiful scenery. If the travellers had had a camera with them, they would have taken photos of the beautiful scenery. 2. There was no sugar left, so we had to go to the shop late in the evening. If there had been any sugar left, we would not have had to go to the shop late in the evening. 3. This house is very nice and comfortable, but it is not very good for living because it is situated close to a chemical plant and the air around is very bad. If this house were not situated close to a chemical plant, the air around would not be bad and the house would be very good for living. 4. He is an excellent specialist, but I cannot ask his advice because I am not acquainted with him. If I were acquainted with him, I would ask his advice because he is an excellent specialist. 5. You cannot enjoy this merry birthday party because you have a toothache. If you didn\'t have a toothache, you would enjoy this merry birthday party.