Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
9. To some extent, being __________ to radioactive substances, children are vulnerable to birth defects. 

A. exposed                  B. led                          C. resulted                               D. affected 

10. Surveys have shown that oil spills lead __________  the deaths of aquatic creatures.

 A. in                           B. about                      C. to                                        D. with 

11. If I __________ you, I __________ rush into a public shelter to avoid being flooded. 

A. was/won’t     B. were/ wouldn’t                 C. were/will                                                    D. were/ would  

12. Admittedly, English is an __________  language of many nations in the world.

A. unique                      B. useful                    C. mother                                D. official  

13. Undoubtedly, Scottish men often wear __________  when they take part in traditional festivals.

A. long skirts                 B. kilts                       C. masks                                  D. fake teeth 

14. __________  to evacuating the village in time, we can save many lives.

A. Thanks                    B. Leading                  C. Have                                   D. Decided