1．The ________(大多数)of the students in my class are from the country.
2．The temperature of the ________(全球)has risen as a result of pollution.
3．With so many people ________(交流)in English，it’s important for us to learn English well.
4．Can you imagine the difficulty we had ________(理解)each other?
5．After the American War，American became an i________ country.
