21. Because of the development of birth-control, women could delay having children . A. Because birth-control was developed, women could delay having children. B. Because birth-control is developed, women could delay having children. C. Despite birth-control is developed, women could delay having children. D. Though birth-control was developed, women could delay having children. 22. John is fat because he eats so many chips. A. John is fat because of the fact that he eats so many chips. B. John is fat because of eating so many chips. C. John is fat because of not eating so many chips. D. A & B are correct. 23. He was very tired but he kept on working. A. Despite he was very tired, he kept on working. B. In spite of he was very tired, he kept on working. C. Though his tiredness, he kept on working. D. Although he was very tired, he kept on working. 24. The trip was boring but we enjoyed it a lot. A. We enjoyed boring trips. B. We are bored with the trip. C. We liked the trip very much even though it was boring. D. The trip bored us. 25. Because the medical care is improved, we live healthier. A. Because of the medical care is improved, we live healthier B. Because of the improvement of the medical care, we live healthier. C. Despite the improvement of the medical care, we live healthier. D. B & C are correct. 26. Although he is rich, he feels unhappy. A. He feels unhappy because of his richness. B. He feels unhappy, so he is rich. C. Despite his richness, he feels unhappy. D. He feels unhappy because he is rich. 27. She accepted the job because the salary was high. A.She accepted the job because of the high salary. B. She accepted the job because of the salary. C. She accepted the job in spite of the high salary. D. All are correct. 28. We can study although it is noisy. A. We can study despite of the noise. B. We can study in spite of the noise. C. We can study despite the fact that it is noisy. D. B & C are correct. 29. People want to learn English because it is important. A. Because of its importance, people want to learn English. B. People want to learn English, so it is important. C. Despite its importance, people want to learn English. D. People want to learn English though it is important.. 30. Despite the fact that it was snowing, I felt warm. A. In spite of snowing, I felt warm. B. In spite of feeling warm, it was snowing. C. Although it was snowing, I felt warm. D. Although I felt warm, it was snowing.