The World Trade Organization (WTO) finally opened its door to China on November 10, ______ our Chinese 15-year wait.
Parent should take seriously their children’s requests for sunglasses _______ eye protection is necessary in sunny weather.
--- Do you know the reason _________ pilots turn off the plane’s lights before taking off? ---The practice is for the passengers to adjust to the dark _________ an emergency.
---Where did you meet him? ---It was in the hotel _________ I was staying.
The process of curing a disease is like a war ___ different soldiers fight against an enemy.
In a sports team each player has a clear role,and there are few occasions members are confused or uncertain of their roles.