Which underlined sound is pronounced differently in each group?

Đề thi THPT QG 2021 – mã đề 404

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in the following question.

Đề thi THPT QG 2021 – mã đề 403

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of stress in the following question.

Đề thi THPT QG 2021 - mã đề 401

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of stress in the following question.

Đề thi THPT QG 2021 - mã đề 401

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of stress in the following question.

Choose the word that underlined part is pronounced differently from the others.

Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in the following question.

Choose the word that underlined part is pronounced differently from the others.