Sure! Let's analyze each question:

**Question 1:** A. hold B. ahead C. echo D. hear
- The underlined parts are:
- hold: /hoʊld/
- ahead: /əˈhɛd/
- echo: /ˈɛkoʊ/
- hear: /hɪər/

The word with a different sound is **"C. echo"** because the "ech" in "echo" is pronounced differently than the others.

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**Question 2:** A. bad B. band C. plan D. want
- The underlined parts are:
- bad: /bæd/
- band: /bænd/
- plan: /plæn/
- want: /wɔnt/

The word with a different sound is **"D. want"** because the vowel sound is different from the others.

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**Question 3:** A. music B. single C. award D. talent
- The stress patterns are:
- music: MUS-ic (stress on the first syllable)
- single: SIN-gle (stress on the first syllable)
- award: a-WARD (stress on the second syllable)
- talent: TAL-ent (stress on the first syllable)

The word with a different stress pattern is **"C. award"** because it is stressed on the second syllable.

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**Question 4:** A. perform B. programme C. become D. amaze
- The stress patterns are:
- perform: per-FORM (stress on the second syllable)
- programme: PRO-gramme (stress on the first syllable - note that 'programme' can be pronounced as one syllable as well in American English)
- become: be-COME (stress on the second syllable)
- amaze: a-MAZE (stress on the second syllable)

The word with a different stress pattern is **"B. programme"** because it is stressed on the first syllable, while the others are stressed on the second syllable.

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To summarize:
- Question 1: C. echo
- Question 2: D. want
- Question 3: C. award
- Question 4: B. programme

I hope this helps!