Based on the provided International Phonetic Alphabet (IPA) notations, I can analyze the sounds and identify the words with different underlined sounds.
1. The underlined sounds in the options are the vowel sounds in "dad," "hat," "plant," and "map."
The words "dad" (dæd), "hat" (hæt), and "plant" (plænt) have the "æ" sound, while "map" (mæp) also has the "æ" sound. However, if we look closely at the actual question, we notice the words have slightly different sounds, "a" is indeed a slight difference in the way the sounds "æ" appear in each word (mæp), ("dæd"), ("hæt") ("plænt").
The real correct answer, with an underlined distinct sound is (plant: plænt).
The words "dad" (dæd), "hat" (hæt) and "map" (mæp) have a more similar sound to each other with the "æ" at the end while the "plant" has an "nt" added and therefore changes the final sound.
So the answer is: c. plant
2. The underlined sounds in the options are the vowel sounds in "needed," "Hied," "watched," and "oop."
The word "watched" (wɔʧt) has a distinct sound, while the words "needed" (ˈnidɪd), "Hied" (hied) and "oop" (up) do not provide enough information for this analysis.
The correct answer is: c. watched
3. The underlined sounds in the options are the vowel sounds in "them," "fails," "kitchen," and "mias."
The word "them" (ðɛm) has a distinct sound, while the words "fails" (feɪlz), "kitchen" (ˈkɪʧən), and "mias" (mias) do not provide enough information for this analysis.
The correct answer is: a. them
4. The underlined sounds in the options are the vowel sounds in "engiporr," "geography," "language," and "great."
The word "great" (greɪt) has a distinct sound, while the words "engiporr" (engiporr), "geography" (ʤiˈɑgrəfi), and "language" (ˈlæŋgwɪʤ) do not provide enough information for this analysis.
The correct answer is: d. great
Here are the answers:
5. C. could / was
6. A. Soil pollution
7. A. Home robots
8. C. schools
9. B. live
10. A. the
11. A. because
12. B. more intelligent
Here are the correct answers:
13-14. Tuan and his brother are not watching at the moment. They are asleep.
15-16. He usually reads a comic and watches a newspaper in his free time.
17. They have not visited his grandparents recently.
18. I think their parents are traveling to Sa Pa next week.
19. beautiful
20. shopping
21. peacefulness
22. pollution
13. C. Yes, they will
24. B. By spaceship
20. D. had a meeting
8. A. over 6 countries