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

Bài 1. Find the word which has a different sound in the part underlined.
Question 1: A. dear
Question 2: A. stupid
Question 3: A. brother
Question 4: A machine
Question 5: A. doctor
Question 6: A. great
B. fear
B. studio
B. thick
B. parachute
B. hospital
B.treasure
C. hear
C. study
C. they
C. champagne
C. pollution
C.measure
D. heart
D. student
D. that
D. cheer
Question 7: A.ancient
B.cave
Question 8: A.spectacular B.structure
Question 9: A.shrine
B.surprising
Question 10: A.structure
B.culture
Question 11: A.cavern
Bài 2. Choose the word which has a diffo
B.citadel
D. tomorrow
D.pleasure
C.cavern
D.aging
C.sculpture
D.picturesque
C.pilgrim
D.island
C.sculpture
D.future
C.complex
D.contestant