1.  >>  成人高等教育 / 大学英语2
 成人高等教育 / 大学英语2

____ from space, our earth, with water covering 70% of its surface, appears to be a “blue planet”.
  • A、
    Seen
  • B、
    Seeing
  • C、
    To be seen
  • D、
    Having seen
  积分
 参考答案:
 佳题速递: