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

C. VOCABULARY AND GRAMMAR
I. Pronunciation: Choose the word whose main stress is placed differently from the others 
1- A. photography              B. dramatical               C. conservation                     D. biology
2- A. physical                    B. disagree                  C. poisonous                       D. national      
 II. Choose the word or phrase that best fits the blank space in each sentence 
 1. We have decreased air pollution.............................. scientific achievements.
 A. because                      B. so                            C. because of                              D. lead to
2. Thousands of buildings and houses were completely ........................ when the earthquake happened the city
A. raged                          B. destroyed              C.shook                                D. rescued           
3- All our English teachers are ………………………. speakers
A. mother tongue             B. foreign                        C. original                        D. native   
4 . Soil  wouldn’t   so polluted   if    farmers didn’t use   too much chemical fertiliser.
                                 A        B                   C               D    
5. Some people need medical help bacasu they have drunk ..............water
A. contaminate                B. contaminated                 C. contaminant             D. contamination
6. Much of the town ……………………………… after the massive destruction of the tornado.
A. is rebuilding                B. was rebuilt                 C. are rebuilding                       D. were rebuilt
7. It looked like my picture …………………………….  by my younger sister sometime before.
A. had been damaged     B. has been damaged       C. was  damaged                 D. had damaged           
8. What .........................you do to help the environment if you ........................... the president?
 A. will / are                 B. would / was                  C. could/ were                        D.can/ will be