Everything comes with ________ price;there is no such ________ thing as a free lunch in the world.
Mary lives in the room,the door ___opens east
For many cities in the world,there is no room to spread out further,___New York is an example
National Day and International Labour Day are great___in our country
Though___money,his parents managed to send him to the university
I am sure David will be able to find the library---he has a pretty good___of direction