1. You did not ring me up, so I did not know you were in trouble. If___ 2. You left the child alone in the room, so he hurt himself. If___ 3. They spent a year in the tropics, so they got very sun-tanned. If___ 4. It rained heavily, so we got drenched to the skin. If___ 5. Why didn't you watch the cat? It ate all the fish. If___ 6. A huge black cloud appeared from behind the forest, so we had to turn back and hurry home. If___ 7. The travellers had no camera with them, so they could not take photos of the beautiful scenery. If___ 8. There was no sugar left, so we had to go to the shop late in the evening. If___ 9. 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___ 10. He is an excellent specialist, but I cannot ask his advice because I am not acquainted with him. If___ 11. You cannot enjoy this merry evening party because you have a toothache. If___ 12. You know the material well enough, but you are very absent-minded, and that's why you always make many mistakes. If___ 13. We shall not go to see them because it is very late. If___ 14. Naturally she was angry, because you were in her way. If___. 15. I did not translate the article yesterday because I had no dictionary. If___ 16. We lost our way because the night was pitch-dark. If___ 17. The box was so heavy that I could not carry it. That's why I took a taxi. If___ 18. I had a bad headache yesterday, that's why I did not come to see you. If___ 19. The ship was sailing near the coast, that's why it struck a rock. If___ 20. He was not in town, therefore he was not present at our meeting. If___ 21. It is late, and I have to go home. If___ 22. He is busy and does not come to see us. If___ 23. The girl did not study well last year and received bad marks. If___ 24. He broke his bicycle and so he did not go to the country. If___ 25. He speaks English badly: he has no practice. If___ Очень нужно