Find the word which has a different sound in the underlined part

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Exercise 3. Find the word which has a different sound in the underlined part.
1. A. group
B. tour
C. soup
D. wound

2. A. leisure
B. culture
C. nature
D. sure

3. A. zoo
B. pool
C. poor
D. food

4. A. oil
B. voice
C. boil
D. soft

5. A. sore
B. destroy
C. joy
D. annoy

Exercise 4. Find the word which has different stress from the others.
1. A. enjoyable
B. concentrate
C. practical
D. media

2. A. account
B. bully
C. discuss
D. upload

3. A. forum
B. pressure
C. teamwork
D. prepare

4. A. connect
B. avoid
C. focused
D. mature

5. A. enjoy
B. stressful
C. session
D. website