单选题 Peter remembers everything exactly as if it ______ yesterday.
  • A. was happening
  • B. happens
  • C. has happened
  • D. happened
【正确答案】 D
【答案解析】[解析] as if后的谓语动词应采用一般过去时的形式与状语yesterday搭配，表示对正在发生的真实情况的虚拟。