Giúp với!!!!!
----- Nội dung dịch tự động từ ảnh -----
Exercise 2: Put the following words into two groups
1. boy
2. doubt
3. voice
4. destroy
5. crown
6. coward
7. mouth
8. found
9. coin
10. south
11. power
12. oil
13. enjoy
14. boil
15. cloud
16. toy
17. tower
18. point
19. drown
20. joy
/ɔ1/
/av/