A. at        
B. on            
C. in

A: Hello. I'm from a big country. Our capital is Ottawa. The Rocky Mountains are in our country. We speak
    English and French.
B: Hi! Look at the flag of our country. It's red. There are five stars on the flag. They are yellow.
C: The flag of our country has fifty stars. They are white. Canada is north of our country.
D: In our country, we speak English. Our country is west of China. We have a king or a queen. They live in
    Buckingham Palace.
1. A's country is ______________.
2. B is from ______________.
3. The 2012 Olympic Games will be held in ______________'s country. ______________ is the capital city.
4. Obama is ______________'s country's president. He lives in the ______________ ______________.