Question 46. He last visited London three years ago. A. He has been in London for three years.​ B. He hasn't visited London for three years. C. He didn't visit London three years ago.​D. He was in London for three years. Question 47. "Don't talk to strangers," my mother said to us. A. My mother advised us to talk to strangers. B. My mother insisted on talking to strangers. C. My mother warned us against talking to strangers. D. My mother asked us to talk to strangers. Question 48. My grandfather was able to work on the field all day without eating. A. My grandfather can work on the field all day without eating. B. My grandfather may work on the field all day without eating. C. My grandfather could work on the field all day without eating. D. My grandfather would work on the field all day without eating. Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions. Question 49. Peter doesn’t study hard and often gets bad marks. His mother hates that. A. Peter wishes he would study hard and get good marks. B. Peter’s mother wishes he had studied hard and got good marks. C. Peter’s mother wishes he studied hard and got good marks. D. In case Peter’s mother wishes he studied hard, he will get good marks. Question 50. Dave became a father. He felt a strong sense of responsibility towards his parents. A. Were Dave to become a father himself, he would feel a strong sense of responsibility towards his parents. B. Only after Dave had become a father himself did he feel a strong sense of responsibility towards his parents. C. Had Dave become a father himself, he would have felt a strong sense of responsibility towards his parents. D. Not until he felt a strong sense of responsibility towards his parents did Dave become a father himself.