We see them off at the airport and waved them___.A.visit B.goodbye C.welcome D.meeting
问题描述：
We see them off at the airport and waved them___.A.visit B.goodbye C.welcome D.meeting
答
B
see off为送别的意思，根据以下选项，则可以判断选B。
答
c
答
B
see off 是送别的意思,所以选项应该是 再见