在过去的几年里,西宁发生了巨大的变化.
Great changes have in Xining in the past several years.
It's ( polite) to talk loudly in public.
We can't leave the old and children at home by (them).
They will hold the (five) sports meeting in their school next week.
这本书讲述了坏人如何为自己的行为付出代价.
The book tells us how bad people their actions.
这种玩具汽车正在这个商店中出售.
This kind of toy car is in the shop.