Understanding the cultural habits of another nation, especially ___containing as many different subcultures as the united states, is very difficult.
If you _____ smoke, please go outside.
-----Is there any possibility ______ you could pick me up at the airport? ----- No problem.
On the contrary, I think it is Truman, ______ you, ______ to blame.
----- Would you rather ______ there tomorrow? ----- No, I’d rather he ______ there instead of me.
Nowadays everyone is responsible for _____ a harmonious(和谐的) society in China.