1.Only the guests who have received the invitations are allowed to come in.
2.Thanks to their support,I am able to concentrate on my researching.
3.Though it is the first time they met each other,they chatted as if they had known each other for many years.
4.This type of car is usually very reliable ,and it is almost impossible for it to go wrong.
5.You can go to the local police for help when you are in danger no matter when and where you are.
正宗的高考规范式英语.