题干
If something happened ________, it happened a long time ago.
A： in the future
B： in the past
C： in the present
答案(点此获取答案解析）
B
If something happened ________, it happened a long time ago.
A： in the future
B： in the past
C： in the present
的终边上一点的坐标为
值为 （ ）