don‘t laugh (at、in、to )others in the school.

问题描述:

don‘t laugh (at、in、to )others in the school.
the ball bounces (of、off、away) the board

选 at
laugh at 固定搭配 嘲笑 笑话
在学校不要嘲笑其他人第二个呢???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????/第二个选offbounce off