题干
As students, _______, we should study hard to be well prepared for the future.
A：at all
B：in all
C：after all
D：above all
答案(点此获取答案解析）
D
As students, _______, we should study hard to be well prepared for the future.
A：at all
B：in all
C：after all
D：above all
的值是（ ）