giải thích cụ thể ạ

1. D - The words "ancient", "royal", "standard" have the stress on the first syllable, while "alive" has the stress on the second syllable. 2. A - The words "structure", "basic", "report" have the stress on the second syllable, while "complex" has the stress on the first syllable. 3. B - The words "modern", "ancient", "barefoot" have the stress on the first syllable, while "complete" has the stress on the second syllable. 4. A - The words "basic", "observe", "structure" have the stress on the second syllable (or the first syllable for "basic"), while "ancient" has the stress on the first syllable. 5. A - The words "historic", "mountainous", "cultural" have the stress on the second syllable, while "glutmous" was not provided with a pronunciation (but "glutinous" would have the stress on the second syllable). 6. D - The words "observe", "promote", "prefer" have the stress on the second syllable, while "visit" has the stress on the first syllable. 7. A - The words "associate", "generation", "significant" have the stress on the second syllable (or the third for "associate"), while "ingredient" has the stress on the second syllable but the vowel sound is different. 8. B - The words "communal", "heritage", "typical" have the stress on the first syllable (or the second for "communal"), while "monument" has the stress on the first syllable but the vowel sound is different. 9. A - The words "protect", "promote", "observe" have the stress on the second syllable, while "visit" has the stress on the first syllable. 10. D - The words "recognise", "contribute", "occupy" have the stress on the second syllable, while "celebrate" has the stress on the second syllable but the vowel sound is different. 11. B - The words "worship", "preserve", "believe" have the stress on the first syllable, while "promote" has the stress on the second syllable. 12. A - The words "monument", "occupied", "heritage" have the stress on the first syllable (or the second for "occupied"), while "communal" has the stress on the second syllable. 13. B - The words "member", "museum", "worship" have the stress on the first syllable (or the second for "museum"), while "future" has the stress on the second syllable. 14. A - The words "recognise", "concentrate", "occupy" have the stress on the second syllable, while "continue" has the stress on the third syllable. 15. B - The words "magnificent", "development", "activity" have the stress on the second syllable (or the third for "magnificent" and "development"), while "generation" has the stress on the third syllable. 16. D - The words "generation", "entertainment", "seniority" have the stress on the third or fourth syllable, while "illiterate" has the stress on the second syllable. 17. D - The words "occasion", "loudspeaker", "violence" have the stress on the second syllable, while "agreement" has the stress on the second syllable but the vowel sound is different. 18. D - The words "dogsled", "worthwhile", "vendor" have the stress on the first syllable (or the second for "worthwhile"), while "barber" has the stress on the first syllable but the vowel sound is different. 19. B - The words "adulthood", "attendant", "punishment" have the stress on the second syllable (or the third for "punishment"), while "funeral" has the stress on the second syllable but the vowel sound is different. 20. B - The words "technological", "imagination" have the stress on the fourth syllable, while "reliability" has the stress on the fourth syllable but the vowel sound is different, and "appreciation" has the stress on the fourth syllable but the vowel sound is different.