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

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part from the other three in pronunciation in the following question
Question 1: A. wanted           B. washed       C. worked       D. stopped
Question 2: A. mention         B. question      C. action         D. education
 
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 primary stress in the following question.
Question3: A. person            B. father                      C. Teacher       D. enjoy
Question4: A. Pollution          B. Picture               C. Village        D. factory