请选择ABCD)m0v)d3S9K6u:i I was just about _________ the office when the phone rang.(]:E7X3~4A/@'O(Y)S/@.h5T
A.leaving(]:E7X3~4A/@'O(Y)S/@.h5T
B.leave(]:E7X3~4A/@'O(Y)S/@.h5T
C.to leave(]:E7X3~4A/@'O(Y)S/@.h5T
D.to leaving(]:E7X3~4A/@'O(Y)S/@.h5T