Choose the word whose underlined part is pronounced differently

Choose the word whose underlined part is pronounced differently.

1.        A. hoped                            B. missed                          C. washed                            D. stayed

2.        A. many                             B. day                                C. pay                                  D. play

3.        A. think                             B. thick                              C. this                                  D. thanks

Choose the word whose main stress is placed differently from the others.

4.        A. official                          B. optional                        C. primary                           D. separate

A. economic  B. embroider C. encourage D. minori