Choose the word having the different stress syllable from the others

Question 2: (0.5pt) Choose the word having the different stress syllable from the others:
1. A. combine    B. invite        C. circle        D. discuss
2. A. excellent    B. wonderful        C. familiar        D. similar
3. A. biology               B. technology    C. internet        D. mechanic
  4. A. wedding      B. campaign        C. comic        D. pastime
    5. A. birthday      B. eleventh        C. sorry                     D. August