18. Did they tell you when they left school?, he said to me. A. He asked me if they told me when they left school. B. He asked me if they told me when they had left school. C. He asked me if they had told me when they left school. D. He asked me if they had told me when they had left school. 19. I often went to school late last year but now I dont. A. I used to went to school late last year. B. I used to go to school late last year. C. I used to goes to school late last year. D. I used to going to school late last year. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines the pair of sentences given in each of the following questions. 20. He stayed at home yesterday. His mom was sick. A. He stayed at home yesterday because his mom was sick B. Because he stayed at home, his mom was sick. C. Although he stayed at home, his mom was sick. D. Despite staying at home, his mom was sick. 21. The doctor is famous. You visited him yesterday. A. The doctor is famous which you visited yesterday. B. The doctor is famous who you visited him yesterday. C. The doctor whom you visited yesterday is famous. D. The doctor whom visited yesterday is famous. 22. English is very interesting. I learn English every day. A. It is interesting to learn English every day. B. English is very interesting to learn English every day. C. It is interesting learning English every day. D. English is very interesting that I learning English every day.