Choose the best answer

Choose the best answer. 
1. My dad doesn't mind ............ my mom from work every day. 
A. pick up   B. picked up C. picking up D. picks up
2. Using computers too much may have harmful effects....... your minds and bodies 
A on B.to C. with D. onto 
3. I love the people in my village. They are so..................... and hospitable. A friendly B. vast C . slow D. convenient 
4. Among the ............., the Tay people have the largest population 
A groups B. cultures C. ethnic minorities D. ethnic 
5. People in the countryside live .................. than those in the city. 
A happy B. more happily C. happily D. less happy 
6. Viet Nam is ............. multicultural country with 54 ethnic groups 
A a B. an C. the D. A and C