Giúp mình với: I. Choose the words whose underlined part is pronounced differently from that of the others in each group. 1.A. ideal B. item C. idiom D. identical 2.A. valentine B. imagine C. magazine D. discipline 3.A. knowledge B. flower C. coward D. shower 4.A. community B. common C. command D. complete 5.A. famine B. determine C. miner D. examine 6. A. played B. washed C. passed D. watched 7. A. market B. depart C. card D. scare 8. A. towel B. down C. window D. flower 9. A. food B. cook C. too D. pool 10.A. character B. Christmas C. church D. chemistry 11. A. object B. robot C. photo D. postcard 12. A. dead B. ahead C. ready D. break 13. A. loved B. missed C. watched D. washed 14. A. tasty B. small C. stadium D. change 15. A. much B. summer C. ruler D. just 16. A. high B. site C. this D. high 17. A. agreed B. helped C. listened D. cleaned 18. A. heat B. meat C. great D. seat 19. A. hall B. all C. ball D. land 20. A. thank B. the C. there D. this