

1. "I can't remember us ever ___" replied the stranger.
A. to meet
B. to have met
C. being met
D. having met
=> sao lại chọn A mà không phải D vậy?
A. to meet
B. to have met
C. being met
D. having met
=> sao lại chọn A mà không phải D vậy?