You shouldn't littering.你不能乱扔垃圾。
You shouldn't quarrel. 你不能吵闹。
You shouldn't fight. 你不能打架。
NO
talking
in
class
上课不要说话
No
eating
in
class
上课不要吃东西
Don't
be
late
for
class
上课不要迟到
Listen
to
the
teacher
carefully
You shouldn't littering.你不能乱扔垃圾。
You shouldn't quarrel. 你不能吵闹。
You shouldn't fight. 你不能打架
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