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

Mn ơi, giúp em với ạ !

Choose the word whose underlined part is pronounced differently from the others.
(1 Điểm)
A. night
B. kite
C. bike
D. Sit
3.Choose the word whose underlined part is pronounced differently from the others.
(1 Điểm)
A. modern
B. dentist
C. cucumber
D. student
4.Choose the word whose underlined part is pronounced differently from the others.
(1 Điểm)
A. fever
B. vegetables
C. net
D. vet