11. A. beds B. doors C. plays D. students
12. A. arms B. suits C. chairs D. boards
13. A. boxes B. classes C. potatoes D. finishes
14. A. relieves B. invents C. buys D. deals
15. A. dreams B. heals C. kills D. tasks
16. A. resources B. stages C. preserves D. focuses
17. A. carriages B. whistles C. assures D. costumes
18. A. offers B. mounts C. pollens D. swords
19. A. miles B. words C. accidents D. names
20. A. sports B. households C. minds D.
11. D
12. B
13. C
14.B
15.D
16. C
17.A
18. B
19.C
20. A
pools
12.
A. programs
13. A. houses
14. A barracks
15. A. crossroads
B. horses
B. series
B. species
II. THE PRONUNCIATION OF THE ENDINGS "-ED"
- /id/; Khi động từ có tận cùng là phụ âm: t, d:
Eg: Wanted/wontid/, Needed / ni:did /
C. means
Oworks
D. headquarters
D. mosquitoes