选出错误的选项并改正。 ( ) 1. Do you know where this is? Yes. it is the White House. ________________ A B C ( ) 2. The flag of the U. S. have stars and stripes. ________________ A B C ( ) 3. China is east of the United States . We live there. ________________ A B C ( ) 4. Do you know Canada? I know the people in Canada speak Chinese . ________________ A B C ( ) 5. Niagara Falls are a famous waterfall in Canada . ________________ A B C