来自刘京朋的问题
IwassohappytoseeJohnagainlastSunday.We___eachotherformorethantwoyears.为什么填hadn'tseen而不填haven'tseen?
IwassohappytoseeJohnagainlastSunday.We___eachotherformorethantwoyears.
为什么填hadn'tseen而不填haven'tseen?

