Choose one word whose underlined part is pronounced differently

Ex1: Choose one word whose underlined part is pronounced differently   
1-
A- documentary         B- celebrate       C- centre        D- vehicle
 2-
A- station B- mistakeC- trafficD- animation
 3-
A- excitedB- annoyedC- disappointedD- crowded
Ex2: Choose the word whose main stress pattern is different from the others.    
4-A- highlightB- festiveC- abroadD- gripping
 5-
A- happenB- performC- reviewD- discuss