Choose the underlined word or phrase, A, B, C or D that needs correcting

V. Choose the underlined word or phrase, A, B, c or D that needs correcting.

1 Could you meet us at the airport tomorrow afternoon? Our flight will land at 4 o’clock.

2. Australia is home of many unique species of animals that cannot be found anywhere else.
   
3 The English language has approximate 400 million native speakers worldwide.

4 The United States of American is the world’s third largest country in size.

    
5. About 20 percents of the world’s population speaks English as a first or second language.
    
6 Scottish kilts were traditionally wore as full length garments by Gaelic-speaking male.
    

7. The Australian flag consists a dark blue field with the Union Jack and six white stars.

    
8. I find it’s difficult to understand some of my Scottish friends because of their accent.
    

9. Niagara Falls is one of the most spectacle waterfalls in the world.

    
10. Visitors to Scotland can spend endless days to explore its historic centuries-old castles.