Mark the latter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions

I. Mark the latter A, B, C or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
1. A. paper                        B. receipt                    C. complain              D. envelop
2. A. official                     B. ocean                      C. convenient           D. precious
3. A. climate               B. pipe                        C. trick         D. tidal
4. A. nuclear               B. tunic                       C. humour         D. pollute
II. 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.
1. A. secretary    B. necessary    C. classify    D. vocabulary
2. A. ambitious    B. dangerous    C. mysterious    D. intelligent
3. A. yesterday    B. applicant    C. employment    D. uniform
4. A. river    B. result    C. rewrite    D. reuse
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