`1. D`
 Festival / Holiday / Stadium : trọng âm `1`
 Souvenir : trọng âm `3`

 `--`

`2. A`
Decoration / Information / Celebration : trọng âm `3`
Environment : trọng âm `2`
`--`
`3. D`
Exchange / Believe / Defeat : trọng âm `2`
Travel : trọng âm `1`
`--`

`4. A`
Energy / Festival / Sightseeing : trọng âm `1`
Performance : trọng âm `2`

 `--`

`5. C`
Report / Exchange / Defeat : trọng âm 2
Happen : trọng âm 1

 `--`

`6. A`
Expensive / Convenient / Delighted : trọng âm `2`
Positive : trọng âm `1`

 `--`

`7. D`
Convenient / Relaxing / Historic : trọng âm `2`
Different : trọng âm `1`

 `--`

`8. C`
Information / Presentation / Competition: trọng âm `3`
Participant: trọng âm `2`

 `--`

`9. B`
Information / Presentation / Competition: trọng âm `3`
Participant: trọng âm `2`

 `--`

`10. A`
Scottish / British / Spanish: trọng âm `1`
Chinese: trọng âm `2`

 `--`

`11. B`
Popular / Difficult / Dangerous: trọng âm `1`
Expensive: trọng âm `2`

 `--`

`12. B`
Essay / Sculpture / Greeting: trọng âm `1`
Report: trọng âm `2`

 `--`

`13. C`
Backpack / Luggage / Passport: trọng âm `1`
Support: trọng âm `2`

 `--`

`14. B`
Pollution / Advantage / Protection : trọng âm `2`
Energy : trọng âm `1`

 `--`

`15. B`
Cambodian / Australian / Canadian : trọng âm `2`
European : trọng âm `3`

 `--`
`\color{#997878}{***p}\color{#7f6464}{e}\color{#665050}{r}\color{#4c3c3c}{s}\color{#332828}{-}\color{#191414}{0}\color{#000000}{1***}`