Choose the word whose underlined part has a different pronunciation from the others in each group:
1/ A. chemist B. change C. child D. cheap

2/ A. fork B. world C. sport D. north

3/ A. plenty B. fairy C. sky D. weekly

4/ A. feather B. head C. healthy D. meat

5/ A. much B. cute C. cut D. sun

6/ A. soften B. fifteen C. enter D. party

7/ A. now B. how C. know D. down

8/ A. this B. mine C. file D. night

9/ A. when B. settle C. become D. fellow

10/ A. where B. here C. fear D. dear