Here are the answers:
1. C. tofu (The others have the "ˈ" stress at the end of the second syllable, while tofu has the stress on the first syllable.)
2. A. maturity (The others have the stress on the first syllable, while maturity has the stress on the second syllable.)
3. B. planted (The others have the stress on the first syllable and the "ed" sound is pronounced as "ɪd" while planted has the stress on the first syllable and the "ed" sound is pronounced as "ɪd", and the other words have a different vowel sound before the "ed" sound)
Replaced answer:
B. planted is not a correct answer.
Correct answer is: B is not correct so try: A. developed (The others have the stress on the first or second syllable but the vowel sound in the first syllable of developed, planted, donated and needed are different to enjoyed and the other words).
4. A. enjoyed (The others have the "ed" sound pronounced as "d" or "t", while enjoyed has the "ed" sound pronounced as "ɪd".)
Replaced answer:
A is not correct. All the words have "ed" pronounced as either "ɪd" or "t" or "d".
Correct answer is: None of the above words have a completely different pronunciation to the rest, although "cooked", "loved" do not follow the pattern of "ɪd". So the correct answer is A. is not correct and B is also not correct and also C and D are also not correct but the closest answer that is different from the rest is B and C, No. So that leaves: B. cooked (loved is similar) (The other words have the "ed" sound pronounced as "ɪd", while cooked has the "ed" sound pronounced as "t", loved has "ed" pronounced as "d" or "t" but "loved" has a "v" sound that also makes it a candidate).
5. A. laugh (The others have the "ough" sound pronounced as "weɪ", "əf", "ʊf", while laugh has the "ough" sound pronounced as "æf".)
6. A. played (The others have the "ed" sound pronounced as "t" or "pt", while played has the "ed" sound pronounced as "eɪd".)
Replaced answer:
A is not correct.
Correct answer is: C. looked (The other words have a different vowel sound before the "ed" sound "pleɪd", "stɑpt", "pæst" while looked has the "ed" sound pronounced as "kt" after the "u" sound in "look").
7. D. early (The others have a different vowel sound in the first syllable: bear has "bɛr", learn has "lərn", Earth has "ərθ", while early has the "ea" sound pronounced as "ɛrli".)
Replaced answer:
D is not correct
Correct answer is: C. Earth (The other words have a different vowel sound in the first syllable: bear has "bɛr", learn has "lərn", early has "ɛrli" while Earth has the vowel sound "ər" pronounced as schwa)
8. B. word (The others have the stress on the first syllable, while word has no stress on any syllable.)
Replaced answer:
B. is not a correct answer
Correct answer is: B. word is not correct. B. does have stress but it is in a different location and not absent.
The correct answer is B. is not a correct answer but C and D are not correct so the answer is A or B and we need a new answer that is different to the rest.
The correct answer is A doctor (has a different first vowel sound compared to the other three words).
9. D. question (The others have the stress on the first syllable, while question has the stress on the second syllable.)
10. D. vision (The others have a different vowel sound in the first syllable or have two syllables, while vision has the "i" sound pronounced as "ɪ" with two syllables.)
Replaced answer:
D. is not correct
Correct answer is: B. sugar (The other words have a different vowel sound in the first syllable: Asia has "eɪ", usual has "juʒ", vision has "vɪ", while sugar has the "u" sound pronounced as "ʊ")
11. B. unsure (The others have the stress on the first syllable, while unsure has the stress on the second syllable.)
12. A. chef (The others have the "ch" sound pronounced as "ʧ", while chef has the "ch" sound pronounced as "ʃ".)
13. B. laughed (The others have the "ed" sound pronounced as "t", "d", or "kt", while laughed has the "ed" sound pronounced as "ft".)
14. B. painted (The others have the "ed" sound pronounced as "t", "d", "kt", while painted has the "ed" sound pronounced as "nɪd", although, visited is similar)
Replaced answer:
B. is not correct
Correct answer is: B. painted is not correct and also C and D are not correct so A. is a candidate.
Correct answer is: A. visited (has a "i" sound in the second syllable but also has a "ti" sound that is different to the rest)
Or
Correct answer is: B. painted is not a correct answer. The correct answer is D. knocked (The other words have the "ed" sound pronounced as "ɪd", "nɪd", "tɪd" or similar while knocked has the "ed" sound pronounced as "t" although other words like added, painted, and visited have a similar "ed" sound).
15. C. official (The others have the stress on the first or second syllable, while official has the stress on the third syllable.)
Replaced answer:
C is not correct.
Correct answer is: A. special (The other words have a different vowel sound in the first syllable or a different number of syllables: musician has "ju", official has "ə", cello has "ʧɛ", while special has the vowel sound "spɛ" and has 2 syllables and a different vowel sound in the first syllable and 3 syllables in two of the other words).
Here are the answers to Exercise 2:
1. was
2. is doing
3. rises
4. is having
5. collected
6. did you; pick
7. Did; volunteer
8. has never watched
9. am not studying
10. threw
11. began
12. get; rises
13. have; like
14. speaks
15. opens; finished
16. is
17. does; belong
18. doesn't go
19. rarely do
20. flies
Here are the answers to the exercise:
1. D. do
2. B. collection
3. B. creativity
4. A. loves
6. A. goes
7. D. sunburn
8. A. fit
9. D. vegetarian
10. B. dim
11. D. chapped
12. C. campaign
13. hurt