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

find the word which has a different sound in the part underlined Atheatre  B anything  C them  D  thirty
find the word which has a different sound in the part underlined A chess B tennis  C contest  D match
find the word which has a different sound in the part underlined Aranket B  exercise  C active   D channel 
find the word which has a different sound in the part underlined Aprogramme  B cold  C crowded  D postcard