问题
选择题
I forget the exact time ________ they reached the South Pole.[ ]
A. how
B. what
C. which
D. when
答案
答案：D
搜题请搜索小程序“爱下问搜题”
I forget the exact time ________ they reached the South Pole.[ ]
A. how
B. what
C. which
D. when
答案：D