estion 35: The last time I visited my grandmother was three months ago. A. It is three months when I last visited my grandmother. B. It is three months since I last visited my grandmother. C. I haven't visited my grandmother since three months. D. I last visited my grandmother was three months ago. estion 36: It's a pity we can't stay longer in Phu Yen. A. I wish we stay longer in Phu Yen. B. I wish we can stay longer in Phu Yen. C. I wish we could stay longer in Phu Yen. D. I wish staying longer in Phu Yen.