13.A. song B. noise C. mistake D. model plane
12.A. prevent B. allow C. forbid D. fight
11.A. chair B. floor C. bed D. table
10.A. each B. every C. about D. certain
9. A. interesting B. possible C. easy D. hard
8. A. turning over B. counting C. looking up D. looking at
7. A. talking with B. watching C. thinking about D. listening to
6. A. chair B. seat C. bench D. desk
5. A. tasted B. sounded C. looked D. felt
4. A. dirty B. nice C. valuable D. modern