1楼：糖醋排骨
初中的语法问题。新目标书上有
school rules:
what we should do
what we shouldn't do
what we must do
糖醋量身定做，质量保证 :)
2楼：匿名用户
school regulations: what should we
do and shouldn't we do and what must
we do.
3楼：病竹
we must know what we should do
what we can't do
what we must do
4楼：匿名用户
school rule. what should we do, what should not we do, what must we do.