1. My friends are addicted ______ playing computer games. A. to B. at C. down D. up .2. Watching TV too much may have harmful effects ______ your eyes and bodies. A. with B. to C. on D. onto 3. I love the people in Da Nang city. They are so hospitable and ______. A. friendly B. vast C. slow D. inconvenient 4. I adore the teachers at my school. They are so kind and ______. A. cheap B. helpful C. slow D. inconvenient 5. Among the ______, the Kinh have the largest population. A. ethnic groups B. majorities C. ethnic minorities D. ethnic cultures 6. The number of the Odu people only account ______ 10% of the population. A. in B. for C. on D. at