to for on/at
the teacher always makes demand on us not to waste time.
to on
at
The teacher always asks us not to waste time
to for on
为你的出色的工作祝贺你
当我听到有人敲门时 我在做晚饭
填空不一定对哦 翻译绝对对
1.to on
2.at
3.Teacher always ask us not to waste time.
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