Choose the word whose underlined part is pronounced differently from that of the others

I) Choose the word whose underlined part is pronounced differently from that of the others.

1.      A- enough           B- tough                 C- rough                D- cough

2.      A- chorus            B- chef                   C- brochure          D- machine

3.      A- measure         B- usually              C- opposite           D- television

4.      A-  fabric           B- glassware         C- metal              D- contact

5.      A- leaf                 B- of                       C- wife                  D- half