单选题 The plane ______ at 7: 00 p. m., so I have to be at the airport by 6 : 40 at the latest.
  • A. has left
  • B. is to leave
  • C. will have left
  • D. leaves


【正确答案】 D
【答案解析】表示按时刻表或日程安排要发生的事，应用一般现在时。