----Have you been to the Summer Palace? ----Perhaps not in my memory._______, it might have been during my early childhood

— How much of his speech do you think you have understood?—________. I wish I had worked harder.

—________?—Father’s Day is coming. I’d like to buy a present for my father.

---I haven’t seen Lucy for three days. Is she ill?---______. Her sister told me she was in hospital.

---I think students should have mobile phones to call their parents.---___________. They often use them to play games instead.