Choose the word whose underlined part is pronounced differently from the others

I. Choose the word whose underlined part is pronounced differently from the others.

11.  A.knee                        B.knit                      C.kangaroo                        D.know

12. A. armchair                  B. sandwich            C. chocolate                       D. school

13. A. writes                      B. washes                C. benches                              D.boxes          

II. Choose one word whose stress pattern is different from the others.

14.  A. homework               B. breakfast             C. between                        D. bookshelf

15.  A. hotel                        B. enjoy                  C. machine                         D. happy