5. My uncle, who is an accomplished guitarist, taught me how to play. A. unqualified B. ill- educated C. unskilled D. unimpaired 6. She was unhappy that she lost contact with a lot of her old friends when she went abroad to study. A. made room for B. put in charge of C. keep in touch with D. lost control of 7. Americans like to be simple in how they wear, so American students choose to wear casual clothes when they go to school. A. informal clothes B. uniforms C. protective wears D.comfortable clothes 8. Don’t be such a pessimist. I’m sure you will soon get over it. Cheer up. A. activist B. feminist C. optimist D. hobbyist 9. Names of people in the book were changed to preserve anonymity. A. reveal B. conserve C. cover D. presume 10. Polluted water and increased water temperatures have driven many species to the verge of extinction. A. enriched B. contaminated C. purified D. strengthen