Mark the letter A, B, C, or D A. frustrating B. charity
10/20
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions.
frustrating
charity
impairment
infectious
Giải thích
Đáp án: B
Giải thích: Đáp án A, C, D trọng âm 2. Đáp án B trọng âm 1.